The impact was just before the wall. And the video doesn't show the angle of descent, as the plane is moving so fast it is never in frame.
Again, your conspiracy is just an awful, awful explanation, contradicted by overwhelming evidence, and is completely unnecessary.
As crashing the plane into the building is simpler and matches the evidence perfectly.
You can see the plane or what ever it was in that video. Took me a while to see it but watch the far right cone. The video does not jive with the story period. Not that I realy care, what the hel can we do about it if it was a conspiracy?
The plane isn't visible in the video because the frame rate is far too slow. You can't see the 'missile' either. The latter because there's simply no evidence of it. The video is inconclusive. It doesn't contain enough information, by itself, to determine what hit the pentagon.
The plane debris, overwhelming majority of eye witness accounts, engine parts, black box, radar records, bodies of folks on the flight recovered from the pentagon, autopsies, crash investigations, engineering reports and the 911 report
provide us with more than enough evidence to determine what hit the pentagon.
An American Airlines 757.
So you ignore it all. A rational person wouldn't. Your conspiracy is simply a terrible explanation, backed by nothing and contradicted by overlapping, compelling evidence.