Not hallucinating, though I can see why you'd think so.

Jim chuckles a bit at that, smile widening on his face. He stops signing for a few moments to bring a hand up and cover his mouth while he laughs. He'd had the same concerns when he'd first ended up here.

Wow. That's a first. Yes. That would be me. What year is it in your home?

The kid doesn't look like he comes form jim's time, but he's been wrong about this sort of thing before.