Aziraphale brightens a little, impressed by all this scientific knowledge and wherewithal. Someone on the outside, investigating? Perhaps that means there's hope, coming from beyond. Perhaps they could get messages out. Wouldn't that be something?

"How fascinating," he says without irony. "You know, I also had one of these dreams before I was brought through - er, I think it was before. It was a little confusing. I don't usually dream, you see. I don't usually sleep." Distressing, that he's slept so much since he got here, and never on purpose. He can only assume it's the Rift making it happen, but why? Are these voluntary for all its victims, or is it just him that is forced into it?

"So you've had one before, then, eh?" he says. "Meet anyone helpful?"