Yeah, I've experienced that as we all have, but again, you would need an awareness to have known the nothingness was there 😏 like waking up as you say. It isn't like being in a sensory deprivation tank for eternity, because even in those you start hallucinating because your brain has to create an experience to remain operational. Speaking of, I wanna try one of those sensory deprivation tanks where you're floating in room temp water in complete darkness and silence. I bet your brain will take you to some crazy places, might even learn to control your reality with your mind having that base point of nothingness. That's probably what the Big bang really was. Absolute nothingness and then the God head observing it created all of this to compensate an experience