diff --git a/gnss/1.1/IGnss.hal b/gnss/1.1/IGnss.hal
index 096f251..672f742 100644
--- a/gnss/1.1/IGnss.hal
+++ b/gnss/1.1/IGnss.hal
@@ -46,15 +46,17 @@
      * @param minIntervalMs Represents the time between fixes in milliseconds.
      * @param preferredAccuracyMeters Represents the requested fix accuracy in meters.
      * @param preferredTimeMs Represents the requested time to first fix in milliseconds.
-     * @param lowPowerMode When true, HAL must make strong tradeoffs to substantially restrict power
-     *     use. Specifically, in the case of a several second long minIntervalMs, the GNSS chipset
-     *     must not, on average, run power hungry operations like RF and signal searches for more
-     *     than one second per interval, and must make exactly one call to gnssSvStatusCb(), and
-     *     either zero or one call to GnssLocationCb() at each interval. When false, HAL must
-     *     operate in the nominal mode (similar to V1.0 where this flag wasn't present) and is
-     *     expected to make power and performance tradoffs such as duty-cycling when signal
-     *     conditions are good and more active searches to reacquire GNSS signals when no signals
-     *     are present.
+     * @param lowPowerMode When true, and IGnss.hal is the only client to the GNSS hardware, the
+     *     GNSS hardware must make strong tradeoffs to substantially restrict power use.
+     *     Specifically, in the case of a several second long minIntervalMs, the GNSS hardware must
+     *     not, on average, run power hungry operations like RF and signal searches for more than
+     *     one second per interval, and must make exactly one call to gnssSvStatusCb(), and either
+     *     zero or one call to GnssLocationCb() at each interval. When false, HAL must operate in
+     *     the nominal mode (similar to V1.0 where this flag wasn't present) and is expected to make
+     *     power and performance tradoffs such as duty-cycling when signal conditions are good and
+     *     more active searches to reacquire GNSS signals when no signals are present.
+     *     When there are additional clients using the GNSS hardware other than IGnss.hal, the GNSS
+     *     hardware may operate in a higher power mode, on behalf of those clients.
      *
      * @return success Returns true if successful.
      */
diff --git a/gnss/1.1/IGnssMeasurement.hal b/gnss/1.1/IGnssMeasurement.hal
index cd83ae3..6ed8e53 100644
--- a/gnss/1.1/IGnssMeasurement.hal
+++ b/gnss/1.1/IGnssMeasurement.hal
@@ -33,10 +33,11 @@
      * @param callback Handle to GnssMeasurement callback interface.
      * @param enableFullTracking If true, GNSS chipset must switch off duty cycling. In such mode
      *     no clock discontinuities are expected and, when supported, carrier phase should be
-     *     continuous in good signal conditions. All constellations and frequency bands that the
-     *     chipset supports must be reported in this mode. The GNSS chipset is allowed to consume
-     *     more power in this mode. If false, API must behave as in HAL V1_0, optimizing power via
-     *     duty cycling, constellations and frequency limits, etc.
+     *     continuous in good signal conditions. All non-blacklisted, healthy constellations,
+     *     satellites and frequency bands that the chipset supports must be reported in this mode.
+     *     The GNSS chipset is allowed to consume more power in this mode. If false, API must behave
+     *     as in HAL V1_0, optimizing power via duty cycling, constellations and frequency limits,
+     *     etc.
      *
      * @return initRet Returns SUCCESS if successful. Returns ERROR_ALREADY_INIT if a callback has
      *     already been registered without a corresponding call to 'close'. Returns ERROR_GENERIC