Not quite what you’re asking, but I once fell asleep on a long haul flight listening to a Cinematic Orchestra album with some very comfy headphones.

I woke up to a little filler / ambient track that is mostly silence with a ship’s fog horn blown a few times… The cabin was dark, most people were asleep or quietly watching movies, and my half asleep brain forgot I was wearing headphones. I went from confused to creeping panic about what this horn meant and why no on else was reacting to it until I finally woke up properly