911: The asymmetry of the collapse of tower 2

This video consists of 8 brief video clips showing the fall of the East wall of the World Trade Centre (WTC) tower 2. Each clip is shown twice, with marked up stills showing key points to note, in between. Following the clips,there are several pictures of the Tower 2/WTC4 debris.
Careful examination of the videos and debris pictures leads one to conclude that the top section of tower 2 toppled over and "cleanly" crushed the major portion of WTC4 (building 4) below. This is not immediately obvious as the top section disappeared from view after tilting/falling to an angle of approximately 21 degrees from the vertical. However, careful examination of the initial dust cloud shows the top of the tower pushing the dust clouds out in a peculiar formation, a second later. We then see a large dust cloud rapidly descending, to the ground below, well away from the side of the tower. As soon as this "cloud" hits the ground below, a huge cloud of dust rises from WTC 4.
The exact trajectory of the top section of the tower is difficult to determine. An "off-set" at the bottom of the section can be seen to emerges in the initial stages of the fall. That is, the bottom of the top section is slewing inwards away, from its original alignment. Also, the top section is "sinking" into the remainder of the tower as it topples over. So it is not simply hinging as it were, about the building face, but slewing and sinking down as it topples.
What about the debris pile? Debris removal began immediately on the night of 911 and a priority was placed upon building 4. So it is difficult to source early video's or pictures of this area. But here are a few revealing pictures in the video.
Why does it matter? There seems to have been some effort to hide this information? The tower top would have been relatively intact and presumably, full of bodies. This mechanism of collapse would appear to ruin the pile driving theories, that the top sections of the tower crushed the remainder of the towers. There is probably some other angle that I'm missing.
I also have a video proposing a mechanism for collapse of the tower cores and the residual "spires", which I don't believe have been explained by any of the theories.
https://www.bitchute.com/video/TQ2SsEEWiBFd/