When the doors finally give way, the Doctor is standing there. He's in the clothes he had on at Christmas: holey shirt, black hoodie, red-lined blue jacket.

But then he takes in Clara's face and can't help but to chuckle softly. "If it's normal you want, you've come to the wrong universe for that, Clara Oswald."

Then he shifts his expression into mock disappointment. "How did you end up here? No. I do know how. I could probably explain it better to you than you could to me. But, you've met me, since you seemed to recognise my voice, so we'll start with that."

And yes, he's still standing in the middle of the two sets of doors, because what better place is there to have a long conversation?