Do they already know that was not the real you?

[ Alice isn't quite sure when the SQUIP's influence over him ended, after all. Was it right before he got pulled onto the train? After he was pulled here? Or perhaps even a while before he ended up here?

It makes it hard to tell how much those people might have known about him. ]

Otherwise I can imagine that it is quite awkward to sit around here, never having been able to explain it to those people.