It was only as the other him made the move to step closer that the Doctor noticed his attire; he'd been understandably distracted by the familiar face. "What are you..." he started, about to ask what exactly he was doing outside in his pyjamas, but he supposed the answer to the question was either the obvious one, or one he didn't really want to know the answer to. Plus, he had bigger problems to worry about than his clone's wardrobe choice - the town was pulling in people from different universes, now the evidence was undeniable. But what did that mean?
"Well, it hasn't exactly been that long for me. I woke up here only a few hours after I left you..." he explained, glancing anxiously up and down the street, as if worried that a passer-by might spot this rather odd scenario. "How long has it been for you?" he asked, remembering that not everyone was from the same point in time.