For some reason, this did not fully occur to the future professor. Never mind the fact he had spend a lot of time in its depths some years ago when he had been interviewing the vampires. He looked at Natty as if he had proposed a most scandalous thing. Never mind that Natty was clearly in his thirties at least so obviously very much not a student. "Oh, that is true! In fact, we are staff of Hogwarts." Not that he had started yet but he was officially hired so it counted.