The Doctor reached into a pocket and fumbled about a bit, coming up with an old bag of jelly babies, a satsuma, a banana, and his psychic paper before he finally managed to locate his sonic screwdriver. He held it out to Koschei, a slight tremor shaking his hand as he did. "You know the setting?" he asked. This version of his old friend seemed far more familiar with him, or perhaps it was just that Koschei wasn't trying to kill him that gave that impression.
"Have you been traveling with him? The other me, I mean. I can't imagine a me running around all by himself. I would have loved to travel the universe with you." If we weren't likely to strangle each other in the process, he added silently to himself.