Elwood Blues said:
Well... This still has me confused.
So how many times do you believe they "looped"?
IMO, it had to have been at least twice because the sequence of events are different between the first and the second.
What I'm getting at is the timeline as first presented in the movie appears to have been manipulated by someone from the future and then manipulated a second time which changed the outcome again because we now know who threw the rock and saved Harry and Sirius. I believe that the first timeline as presented in the movie is not the original timeline. Otherwise, they would have been caught in Hagred's hut and Harry and Sirius wouldn't have been saved.
I think you are reading too much into this. I don't see how the timelines are different or manipulated, or how it seems they "looped" more than once. If that were the case, I don't think they would have left something like that unexplained and I think a lot more people would be complaining about that.
When Harry & Hermione went through the first time, they didn't understand how the rocks were thrown or where the howl came from because it was their first time experiencing any of that. Hermione also tells Harry when they begin their time traval experience that it's VERY important that they aren't seen.
When they were in Hagrid's hut and the rocks (or shells, whatever they were) came through the window, Hermione picked one up and took a long look at it. It was after Hermione asked, "Why aren't we leaving?" while hiding in Hagrid's garden that she recognized that same rock and it was then she realized that it must've been thrown by themselves.
When Harry believed it was his father that saved himself & Sirius, he was waiting around the second time to see his father. When Harry realized his father wasn't coming, he stepped up and warded off the Dementors. He then realized that it was him all along.
These are things that effected the first experience, but they weren't aware of exactly what was going on until they lived through it their second time around.
Here's how I see it, and I think most others will agree: during their first experience, they are only aware of what is happening to them at that moment, but are effected by what is done during their time travel. Then after the second run through, they remember everything from both experiences, because they have now lived through both.
I'm sorry, I'm really not understanding where the confusion lies. It seems pretty clear to me.