The very last bit about going to bed being a break in consciousness... I dream. That's how I know. Because the stream of consciousness doesn't actually end when I sleep. It just goes on autopilot, unless I lucid dream.
I understand the science behind this, but I routinely use weed just before bed and have the same amount of dreams (that I remember, at least) as when I take an extended break. From experience I don’t think the sleep/dream disruption is as heavy as they say.