This is how I don't seem to agree with "Advaitists," assuming there really are such people: the analogy of night-dreaming breaks down when it comes to truly awakening, because nobody awakens. There is no real dreamer. The dreamer is an aspect of the dream of separation. What is awoken to is nonseparation, noself. But nobody wakes up.

The revelation of nonseparation can, and does, happen frequently. There's no reason for it not to apparently happen during nighttime dreaming, on a roller coaster, while eating lunch, or at any other time. For sure, the nightime dreaming state is an unusual one and perhaps one where the self-illusion could seem to be caught off-guard more "easily."