"Oh," says Aziraphale, a rather inadequate response, but he's working his way up to something better, surely. He forgot to introduce himself, how rude. "Aziraphale," he replies, opting against offering a hand, what with all the pie-eating.

"I'm... sorry to hear that," he says uncertainly. Is he sorry? He doesn't really know enough about Ianto Jones to say. He's probably sorry. But is it rude to say so? Too late now. He commences picking at his pie. "You're waking up now, though?" seems the polite next step. Let's make sure that's taken care of.