I had a similar experience. I was in the office and watched the news unfold on TV and another eye on the stock market, watching the airline stocks drop.
I had the same reaction to the buildings dropping. I told people in the office that nothing was going to happen. Heat rises, I said, and most people would evacuate safely.
I was shocked when the first building fell and then gobsmacked when the second building fell. I thought there had to be explosives. At that point we left the office because we were in a tall building and there were rumors that other buildings might be targeted.
I remember being confused about flight 93, the plane in Pennsylvania. At first the reporters were interviewing eyewitness who saw the plane chased by military jets. The plane exploded in midair and debris rained down. The reporters were showing bits and pieces scattered over a wide area. Then the story changed abruptly. Now the plane had crashed into a field. They showed a blackened area where the plane apparently crashed but there wasn’t a plane, just a burned area. At first I thought they were talking about another plane, but I eventually realized that it was the same plane with a new story. They showed the charred area a few times and then never showed it again. To this day, I don’t think I’ve seen that footage since.
I became even more confused when I learned about building seven.