Just out of interest, then, is that actually smoke...
Smoke/fine particulate matter/...
It
looks like it is emanating from the East face of WTC 1, which it clearly is not.
Remarkably similar to the behaviour of the fine particulate matter that also
looks like it is emanating from the South face of WTC7, even though most of the windows at the actual locations are not broken, and said fine particulate matter looks like it's emanating from the actual very corner of the building. Remarkable

Must be oozing through the porous building cladding eh.
The point you are continuing to avoid is that it is quite valid to doubt the interpretation of the A/V material, as similar behaviour can be seen for WTC1 with a known condition...ie not on fire in the region...the East face is not engulfed in flames.
So...
1) Which two buildings did you mean ?
2) Where is the particulate matter that looks like it's emanating from WTC1 East face coming from ?
3) What did you mean by *Two buildings, both burning, visually aligned in that film.* ?
4) Why do you think *This doesn't apply to WTC7 as it was much taller than WTC5+6.* ?