Let go and let Godzilla

Recall this post on Thompson and dreamless sleep. One question that pops up for me is whether the long-time meditators experience this base awareness all the time during deep sleep? Or just some of the time? Do we require some time during deep sleep to go completely unconscious in order to allow our biological processes to refresh and rejuvenate us? Would even a minimal base awareness get in the way of that process, since such a base sans its metaphysical description does not in any way fully access deep unconscious processes and may in fact inhibit or detract from them?  Maybe we need to let go and let Zombie* during sleep? Just wondering.

* This adds a whole new dimension to the metaphysical phrase "Let go and let God." Perhaps Godzilla instead? Or Cthulhu?