yes an example of this for me is being in the back seat of a car and falling asleep only to keep waking up from the exterior noises and voices..then drift off again each time having what seems like long running dreams in between a few minutes..the opposite can hold true if you have no dream recall at all..you fall asleep for hours aand upon waking you lost time..feels like a few minutes since you went to sleep...When I can,t recall anything upon awakening I think ..what another waisted night of sleeping.