diff --git a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
index 5d576f7..01cf23b 100644
--- a/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/NavbarButtonsViewController.java
@@ -35,6 +35,7 @@
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_OVERVIEW_DISABLED;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_QUICK_SETTINGS_EXPANDED;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_SCREEN_PINNING;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_VOICE_INTERACTION_WINDOW_SHOWING;
 import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_REGION;
 
 import android.animation.ArgbEvaluator;
@@ -105,6 +106,7 @@
     private static final int FLAG_DISABLE_BACK = 1 << 9;
     private static final int FLAG_NOTIFICATION_SHADE_EXPANDED = 1 << 10;
     private static final int FLAG_SCREEN_PINNING_ACTIVE = 1 << 11;
+    private static final int FLAG_VOICE_INTERACTION_WINDOW_SHOWING = 1 << 12;
 
     private static final int MASK_IME_SWITCHER_VISIBLE = FLAG_SWITCHER_SUPPORTED | FLAG_IME_VISIBLE;
 
@@ -207,9 +209,12 @@
         boolean isInKidsMode = mContext.isNavBarKidsModeActive();
         boolean alwaysShowButtons = isThreeButtonNav || isInSetup;
 
-        // Make sure to remove nav bar buttons translation when notification shade is expanded or
-        // IME is showing (add separate translation for IME).
-        int flagsToRemoveTranslation = FLAG_NOTIFICATION_SHADE_EXPANDED | FLAG_IME_VISIBLE;
+        // Make sure to remove nav bar buttons translation when any of the following occur:
+        // - Notification shade is expanded
+        // - IME is showing (add separate translation for IME)
+        // - VoiceInteractionWindow (assistant) is showing
+        int flagsToRemoveTranslation = FLAG_NOTIFICATION_SHADE_EXPANDED | FLAG_IME_VISIBLE
+                | FLAG_VOICE_INTERACTION_WINDOW_SHOWING;
         mPropertyHolders.add(new StatePropertyHolder(mNavButtonInAppDisplayProgressForSysui,
                 flags -> (flags & flagsToRemoveTranslation) != 0, AnimatedFloat.VALUE,
                 1, 0));
@@ -443,6 +448,8 @@
                 | SYSUI_STATE_QUICK_SETTINGS_EXPANDED;
         boolean isNotificationShadeExpanded = (sysUiStateFlags & shadeExpandedFlags) != 0;
         boolean isScreenPinningActive = (sysUiStateFlags & SYSUI_STATE_SCREEN_PINNING) != 0;
+        boolean isVoiceInteractionWindowShowing =
+                (sysUiStateFlags & SYSUI_STATE_VOICE_INTERACTION_WINDOW_SHOWING) != 0;
 
         // TODO(b/202218289) we're getting IME as not visible on lockscreen from system
         updateStateForFlag(FLAG_IME_VISIBLE, isImeVisible);
@@ -453,6 +460,7 @@
         updateStateForFlag(FLAG_DISABLE_BACK, isBackDisabled);
         updateStateForFlag(FLAG_NOTIFICATION_SHADE_EXPANDED, isNotificationShadeExpanded);
         updateStateForFlag(FLAG_SCREEN_PINNING_ACTIVE, isScreenPinningActive);
+        updateStateForFlag(FLAG_VOICE_INTERACTION_WINDOW_SHOWING, isVoiceInteractionWindowShowing);
 
         if (mA11yButton != null) {
             // Only used in 3 button
@@ -750,6 +758,8 @@
         appendFlag(str, flags, FLAG_NOTIFICATION_SHADE_EXPANDED,
                 "FLAG_NOTIFICATION_SHADE_EXPANDED");
         appendFlag(str, flags, FLAG_SCREEN_PINNING_ACTIVE, "FLAG_SCREEN_PINNING_ACTIVE");
+        appendFlag(str, flags, FLAG_VOICE_INTERACTION_WINDOW_SHOWING,
+                "FLAG_VOICE_INTERACTION_WINDOW_SHOWING");
         return str.toString();
     }
 
diff --git a/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java b/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java
index b797807..f472427 100644
--- a/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/StashedHandleViewController.java
@@ -43,7 +43,8 @@
 
     public static final int ALPHA_INDEX_STASHED = 0;
     public static final int ALPHA_INDEX_HOME_DISABLED = 1;
-    private static final int NUM_ALPHA_CHANNELS = 2;
+    public static final int ALPHA_INDEX_ASSISTANT_INVOKED = 2;
+    private static final int NUM_ALPHA_CHANNELS = 3;
 
     /**
      * The SharedPreferences key for whether the stashed handle region is dark.
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
index 95da118..61fad50 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarActivityContext.java
@@ -27,6 +27,7 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_FOLDER_OPEN;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_NOTIFICATION_PANEL_EXPANDED;
 import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_QUICK_SETTINGS_EXPANDED;
+import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_VOICE_INTERACTION_WINDOW_SHOWING;
 
 import android.animation.AnimatorSet;
 import android.animation.ValueAnimator;
@@ -200,7 +201,8 @@
                 new TaskbarPopupController(this),
                 new TaskbarForceVisibleImmersiveController(this),
                 new TaskbarAllAppsController(this, dp),
-                new TaskbarInsetsController(this));
+                new TaskbarInsetsController(this),
+                new VoiceInteractionWindowController(this));
     }
 
     public void init(@NonNull TaskbarSharedState sharedState) {
@@ -246,12 +248,20 @@
         return super.getStatsLogManager();
     }
 
-    /** Creates LayoutParams for adding a view directly to WindowManager as a new window */
+    /** @see #createDefaultWindowLayoutParams(int) */
     public WindowManager.LayoutParams createDefaultWindowLayoutParams() {
+        return createDefaultWindowLayoutParams(TYPE_NAVIGATION_BAR_PANEL);
+    }
+
+    /**
+     * Creates LayoutParams for adding a view directly to WindowManager as a new window.
+     * @param type The window type to pass to the created WindowManager.LayoutParams.
+     */
+    public WindowManager.LayoutParams createDefaultWindowLayoutParams(int type) {
         WindowManager.LayoutParams windowLayoutParams = new WindowManager.LayoutParams(
                 MATCH_PARENT,
                 mLastRequestedNonFullscreenHeight,
-                TYPE_NAVIGATION_BAR_PANEL,
+                type,
                 WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
                         | WindowManager.LayoutParams.FLAG_SLIPPERY,
                 PixelFormat.TRANSLUCENT);
@@ -468,6 +478,8 @@
                 fromInit);
         mControllers.navButtonController.updateSysuiFlags(systemUiStateFlags);
         mControllers.taskbarForceVisibleImmersiveController.updateSysuiFlags(systemUiStateFlags);
+        mControllers.voiceInteractionWindowController.setIsVoiceInteractionWindowVisible(
+                (systemUiStateFlags & SYSUI_STATE_VOICE_INTERACTION_WINDOW_SHOWING) != 0, fromInit);
     }
 
     /**
@@ -612,7 +624,9 @@
 
     /** Removes the given view from WindowManager. See {@link #addWindowView}. */
     public void removeWindowView(View view) {
-        mWindowManager.removeViewImmediate(view);
+        if (view.isAttachedToWindow()) {
+            mWindowManager.removeViewImmediate(view);
+        }
     }
 
     protected void onTaskbarIconClicked(View view) {
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
index 449e0a7..d7b50b0 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarControllers.java
@@ -52,6 +52,7 @@
     public final TaskbarForceVisibleImmersiveController taskbarForceVisibleImmersiveController;
     public final TaskbarAllAppsController taskbarAllAppsController;
     public final TaskbarInsetsController taskbarInsetsController;
+    public final VoiceInteractionWindowController voiceInteractionWindowController;
 
     @Nullable private LoggableTaskbarController[] mControllersToLog = null;
 
@@ -80,7 +81,8 @@
             TaskbarPopupController taskbarPopupController,
             TaskbarForceVisibleImmersiveController taskbarForceVisibleImmersiveController,
             TaskbarAllAppsController taskbarAllAppsController,
-            TaskbarInsetsController taskbarInsetsController) {
+            TaskbarInsetsController taskbarInsetsController,
+            VoiceInteractionWindowController voiceInteractionWindowController) {
         this.taskbarActivityContext = taskbarActivityContext;
         this.taskbarDragController = taskbarDragController;
         this.navButtonController = navButtonController;
@@ -99,6 +101,7 @@
         this.taskbarForceVisibleImmersiveController = taskbarForceVisibleImmersiveController;
         this.taskbarAllAppsController = taskbarAllAppsController;
         this.taskbarInsetsController = taskbarInsetsController;
+        this.voiceInteractionWindowController = voiceInteractionWindowController;
     }
 
     /**
@@ -126,13 +129,15 @@
         taskbarAllAppsController.init(this, sharedState.allAppsVisible);
         navButtonController.init(this);
         taskbarInsetsController.init(this);
+        voiceInteractionWindowController.init(this);
 
         mControllersToLog = new LoggableTaskbarController[] {
                 taskbarDragController, navButtonController, navbarButtonsViewController,
                 taskbarDragLayerController, taskbarScrimViewController, taskbarViewController,
                 taskbarUnfoldAnimationController, taskbarKeyguardController,
                 stashedHandleViewController, taskbarStashController, taskbarEduController,
-                taskbarAutohideSuspendController, taskbarPopupController, taskbarInsetsController
+                taskbarAutohideSuspendController, taskbarPopupController, taskbarInsetsController,
+                voiceInteractionWindowController
         };
 
         mAreAllControllersInitialized = true;
@@ -172,6 +177,7 @@
         taskbarAllAppsController.onDestroy();
         navButtonController.onDestroy();
         taskbarInsetsController.onDestroy();
+        voiceInteractionWindowController.onDestroy();
 
         mControllersToLog = null;
     }
diff --git a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
index 3562f5b..fdd9de5 100644
--- a/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
+++ b/quickstep/src/com/android/launcher3/taskbar/TaskbarViewController.java
@@ -63,7 +63,8 @@
     public static final int ALPHA_INDEX_STASH = 2;
     public static final int ALPHA_INDEX_RECENTS_DISABLED = 3;
     public static final int ALPHA_INDEX_NOTIFICATION_EXPANDED = 4;
-    private static final int NUM_ALPHA_CHANNELS = 5;
+    public static final int ALPHA_INDEX_ASSISTANT_INVOKED = 5;
+    private static final int NUM_ALPHA_CHANNELS = 6;
 
     private final TaskbarActivityContext mActivity;
     private final TaskbarView mTaskbarView;
diff --git a/quickstep/src/com/android/launcher3/taskbar/VoiceInteractionWindowController.kt b/quickstep/src/com/android/launcher3/taskbar/VoiceInteractionWindowController.kt
new file mode 100644
index 0000000..946873e
--- /dev/null
+++ b/quickstep/src/com/android/launcher3/taskbar/VoiceInteractionWindowController.kt
@@ -0,0 +1,109 @@
+package com.android.launcher3.taskbar
+
+import android.graphics.Canvas
+import android.view.WindowManager
+import android.view.WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY
+import com.android.launcher3.views.BaseDragLayer
+import com.android.systemui.animation.ViewRootSync
+import java.io.PrintWriter
+
+private const val TASKBAR_ICONS_FADE_DURATION = 300L
+private const val STASHED_HANDLE_FADE_DURATION = 180L
+
+/**
+ * Controls Taskbar behavior while Voice Interaction Window (assistant) is showing.
+ */
+class VoiceInteractionWindowController(val context: TaskbarActivityContext)
+    : TaskbarControllers.LoggableTaskbarController {
+
+    private val taskbarBackgroundRenderer = TaskbarBackgroundRenderer(context)
+
+    // Initialized in init.
+    private lateinit var controllers: TaskbarControllers
+    private lateinit var separateWindowForTaskbarBackground: BaseDragLayer<TaskbarActivityContext>
+    private lateinit var separateWindowLayoutParams: WindowManager.LayoutParams
+
+    private var isVoiceInteractionWindowVisible: Boolean = false
+
+    fun init(controllers: TaskbarControllers) {
+        this.controllers = controllers
+
+        separateWindowForTaskbarBackground =
+            object : BaseDragLayer<TaskbarActivityContext>(context, null, 0) {
+                override fun recreateControllers() {
+                    mControllers = emptyArray()
+                }
+
+                override fun draw(canvas: Canvas) {
+                    super.draw(canvas)
+                    taskbarBackgroundRenderer.draw(canvas)
+                }
+            }
+        separateWindowForTaskbarBackground.recreateControllers()
+        separateWindowForTaskbarBackground.setWillNotDraw(false)
+
+        separateWindowLayoutParams = context.createDefaultWindowLayoutParams(
+            TYPE_APPLICATION_OVERLAY)
+        separateWindowLayoutParams.isSystemApplicationOverlay = true
+    }
+
+    fun onDestroy() {
+        setIsVoiceInteractionWindowVisible(visible = false, skipAnim = true)
+    }
+
+    fun setIsVoiceInteractionWindowVisible(visible: Boolean, skipAnim: Boolean) {
+        if (isVoiceInteractionWindowVisible == visible) {
+            return
+        }
+        isVoiceInteractionWindowVisible = visible
+
+        // Fade out taskbar icons and stashed handle.
+        val taskbarIconAlpha = if (isVoiceInteractionWindowVisible) 0f else 1f
+        val fadeTaskbarIcons = controllers.taskbarViewController.taskbarIconAlpha
+            .getProperty(TaskbarViewController.ALPHA_INDEX_ASSISTANT_INVOKED)
+            .animateToValue(taskbarIconAlpha)
+            .setDuration(TASKBAR_ICONS_FADE_DURATION)
+        val fadeStashedHandle = controllers.stashedHandleViewController.stashedHandleAlpha
+            .getProperty(StashedHandleViewController.ALPHA_INDEX_ASSISTANT_INVOKED)
+            .animateToValue(taskbarIconAlpha)
+            .setDuration(STASHED_HANDLE_FADE_DURATION)
+        fadeTaskbarIcons.start()
+        fadeStashedHandle.start()
+        if (skipAnim) {
+            fadeTaskbarIcons.end()
+            fadeStashedHandle.end()
+        }
+
+        if (context.isGestureNav && controllers.taskbarStashController.isInAppAndNotStashed) {
+            moveTaskbarBackgroundToLowerLayer()
+        }
+    }
+
+    /**
+     * Hides the TaskbarDragLayer background and creates a new window to draw just that background.
+     */
+    private fun moveTaskbarBackgroundToLowerLayer() {
+        val taskbarBackgroundOverride = controllers.taskbarDragLayerController
+            .overrideBackgroundAlpha
+        if (isVoiceInteractionWindowVisible) {
+            // First add the temporary window, then hide the overlapping taskbar background.
+            context.addWindowView(separateWindowForTaskbarBackground, separateWindowLayoutParams)
+            ViewRootSync.synchronizeNextDraw(separateWindowForTaskbarBackground, context.dragLayer
+            ) {
+                taskbarBackgroundOverride.updateValue(0f)
+            }
+        } else {
+            // First reapply the original taskbar background, then remove the temporary window.
+            taskbarBackgroundOverride.updateValue(1f)
+            ViewRootSync.synchronizeNextDraw(separateWindowForTaskbarBackground, context.dragLayer
+            ) {
+                context.removeWindowView(separateWindowForTaskbarBackground)
+            }
+        }
+    }
+
+    override fun dumpLogs(prefix: String, pw: PrintWriter) {
+        pw.println(prefix + "VoiceInteractionWindowController:")
+        pw.println("$prefix\tisVoiceInteractionWindowVisible=$isVoiceInteractionWindowVisible")
+    }
+}
\ No newline at end of file