Oh,my, there's clearly a reinforced temporal loop working here. I think I'm getting an idea of what Zee said to Harry during that long discussion and why Harry requested him to stay. I wonder what Severus would make of Zee being the sole party responsible for the rescue of the August Offering? I suspect he might, just might, have a bit more respect for him. I like the way Zee is trying to help him because he's showed the first step toward saving himself. 'Twould be amusing if the last thing he did was reveal himself to Snape, though I suspect that wouldn't come 'til much later; I'm sure the Christmas discussions will include much of Zee's backgound, including that he is a rather older Harry.
Yep, you got 'er almost nailed down.