diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinator.kt b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinator.kt
index 6bf7668..82bd45c 100644
--- a/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinator.kt
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinator.kt
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+@file:OptIn(ExperimentalCoroutinesApi::class)
+
 package com.android.systemui.statusbar.notification.collection.coordinator
 
 import android.os.UserHandle
@@ -39,14 +41,20 @@
 import com.android.systemui.util.settings.SecureSettings
 import com.android.systemui.util.settings.SettingsProxyExt.observerFlow
 import javax.inject.Inject
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.seconds
 import kotlinx.coroutines.CoroutineDispatcher
 import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.ExperimentalCoroutinesApi
 import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.delay
 import kotlinx.coroutines.flow.collectLatest
 import kotlinx.coroutines.flow.conflate
+import kotlinx.coroutines.flow.first
 import kotlinx.coroutines.flow.flowOn
 import kotlinx.coroutines.flow.map
 import kotlinx.coroutines.flow.onStart
+import kotlinx.coroutines.flow.transformLatest
 import kotlinx.coroutines.launch
 
 /**
@@ -93,14 +101,39 @@
     private suspend fun trackUnseenNotificationsWhileUnlocked() {
         // Use collectLatest so that trackUnseenNotifications() is cancelled when the keyguard is
         // showing again
+        var clearUnseenOnUnlock = false
         keyguardRepository.isKeyguardShowing.collectLatest { isKeyguardShowing ->
-            if (!isKeyguardShowing) {
+            if (isKeyguardShowing) {
+                // Wait for the user to spend enough time on the lock screen before clearing unseen
+                // set when unlocked
+                awaitTimeSpentNotDozing(SEEN_TIMEOUT)
+                clearUnseenOnUnlock = true
+            } else {
                 unseenNotifFilter.invalidateList("keyguard no longer showing")
+                if (clearUnseenOnUnlock) {
+                    clearUnseenOnUnlock = false
+                    unseenNotifications.clear()
+                }
                 trackUnseenNotifications()
             }
         }
     }
 
+    private suspend fun awaitTimeSpentNotDozing(duration: Duration) {
+        keyguardRepository.isDozing
+            // Use transformLatest so that the timeout delay is cancelled if the device enters doze,
+            // and is restarted when doze ends.
+            .transformLatest { isDozing ->
+                if (!isDozing) {
+                    delay(duration)
+                    // Signal timeout has completed
+                    emit(Unit)
+                }
+            }
+            // Suspend until the first emission
+            .first()
+    }
+
     private suspend fun trackUnseenNotifications() {
         coroutineScope {
             launch { clearUnseenNotificationsWhenShadeIsExpanded() }
@@ -240,5 +273,6 @@
 
     companion object {
         private const val TAG = "KeyguardCoordinator"
+        private val SEEN_TIMEOUT = 5.seconds
     }
 }
diff --git a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinatorTest.kt b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinatorTest.kt
index 49da848..8109e24 100644
--- a/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinatorTest.kt
+++ b/packages/SystemUI/tests/src/com/android/systemui/statusbar/notification/collection/coordinator/KeyguardCoordinatorTest.kt
@@ -23,6 +23,7 @@
 import android.testing.AndroidTestingRunner
 import androidx.test.filters.SmallTest
 import com.android.systemui.SysuiTestCase
+import com.android.systemui.coroutines.advanceTimeBy
 import com.android.systemui.keyguard.data.repository.FakeKeyguardRepository
 import com.android.systemui.plugins.statusbar.StatusBarStateController
 import com.android.systemui.statusbar.StatusBarState
@@ -311,17 +312,20 @@
     fun unseenNotificationIsMarkedAsSeenWhenKeyguardGoesAway() {
         whenever(notifPipelineFlags.shouldFilterUnseenNotifsOnKeyguard).thenReturn(true)
 
-        // GIVEN: Keyguard is showing, unseen notification is present
+        // GIVEN: Keyguard is showing, not dozing, unseen notification is present
         keyguardRepository.setKeyguardShowing(true)
+        keyguardRepository.setDozing(false)
         runKeyguardCoordinatorTest {
             val fakeEntry = NotificationEntryBuilder().build()
             collectionListener.onEntryAdded(fakeEntry)
 
+            // WHEN: five seconds have passed
+            testScheduler.advanceTimeBy(5.seconds)
+            testScheduler.runCurrent()
+
             // WHEN: Keyguard is no longer showing
             keyguardRepository.setKeyguardShowing(false)
-
-            // When: Shade is expanded
-            statusBarStateListener.onExpandedChanged(true)
+            testScheduler.runCurrent()
 
             // WHEN: Keyguard is shown again
             keyguardRepository.setKeyguardShowing(true)
diff --git a/packages/SystemUI/tests/utils/src/com/android/systemui/coroutines/TestCoroutineSchedulerUtils.kt b/packages/SystemUI/tests/utils/src/com/android/systemui/coroutines/TestCoroutineSchedulerUtils.kt
new file mode 100644
index 0000000..84e2a5c
--- /dev/null
+++ b/packages/SystemUI/tests/utils/src/com/android/systemui/coroutines/TestCoroutineSchedulerUtils.kt
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+@file:OptIn(ExperimentalCoroutinesApi::class)
+
+package com.android.systemui.coroutines
+
+import kotlin.time.Duration
+import kotlinx.coroutines.ExperimentalCoroutinesApi
+import kotlinx.coroutines.test.TestCoroutineScheduler
+
+/**
+ * Moves the virtual clock of this dispatcher forward by the specified [Duration].
+ *
+ * @see [TestCoroutineScheduler.advanceTimeBy]
+ */
+fun TestCoroutineScheduler.advanceTimeBy(duration: Duration) {
+    advanceTimeBy(duration.inWholeMilliseconds)
+}