Harry said:you an engineer ?
My logic says it would burn and burn and fall apart gradually with the top section collapsing onto the bottom section and gradually mangling until the fires were put out. but, like you, I'm no expert. We have differing logic and opinion.
Now the only thing you have to back up your logic is the OR which was compromised. I have sceptical engineers and architects who have nothing to gain.
How would my being an engineer change an argument based only on logic? Yours versus mine. I have a rudimentary understanding of physics. How much energy did the plane have just before impact? The energy comprised of it's momentum plus all the energy in the unused fuel I imagine. If it disintegrated upon impact then all of that energy was transferred to the tower. What do think that would do? Now you've got all that energy plus you have severed much of building in half. All of the energy in the top section wants to go only one way and much of what was designed to keep up there it there is now gone. So all that energy is now trying to pull it down. You know the rest.