Sitting across from Snape in his office, Harry couldn’t help but be strangely relieved that he was there for his neck, rather than to learn occlumency. As confident as he was in the strength of his shields, he wasn’t confident they would hold up indefinitely under constant direct attack - the last thing he wanted to do was try and explain his knowledge of the future to Snape (well... not the future any more he supposed). It had been bad enough trying to explain the dreams of Voldemort’s activities the first time round.