There were many eyewitness accounts of people saying there were explosions, and also visual evidence.
https://911research.wtc7.net/mirrors/guardian2/wtc/tower-explosions.htm
There are many eyewitness that have seen Sasquatch and UFOs too. And mermaids.
Those are not explosions.
That’s what it looks like when 3.2 million pounds of floor pancakes into each other.
Air compressed by the collapse of upper floors blowing out windows a floor or three below the collapse point may look explosive, with no dynamite involved.