That’s simply not true. Look at the room layouts. If you change the angle of firing (assuming he was shooting at the tanks out of the “far” window, and the people out of the near window, or vice versa), it *will* change what someone nearby, who is stationary, will hear. I’ve shot guns all my life, of varying kinds, and sometimes with multiple people. If someone alters where they are aiming by 30 degrees, it makes a difference in how loud the report is to a bystander who is not moving.
Having said all of that, you could still be right, that there is a second shooter who is closer, and that the faraway sounding shots are from the 32nd floor. The second shooter on the 4th or 5th floor theory has been debunked. There are no other windows knocked out, and the muzzle flash video is not muzzle flash. So, if there is a second shooter, I’m not sure where you’re saying they’re located.
Anyway, the Airbnb evidence is the subject of this thread.