"If it's long enough to be nine already, that is quite a while. Have you been here all alone?"
He studied his younger self, privately hoping it wouldn't be months before he found a way out of here himself. It would quite possibly drive him mad, trapped in a pocket universe with an untold number of himselves and the Doctors, and whoever else had washed into this place. And having experienced the depths of insanity only a regeneration ago, he wasn't at all eager to go back to that.