Obviously he is so familiar with his own story, after no doubt telling it repeatedly over the last several years, that he keeps 'cutting to the chase'.
Rather than drearily go over the tedious chronology of events for the umpteenth time, he attempts to hilite the items that he believes would be of interest to the camera.
A lot of mundane stuff must have happened to the two men when they arrived at the 8th floor.
Better interviewers would have plied Mr. Jennings with questions which would have compelled him to methodically go over the series of events that transpired.
Unfortunately, they gave him too much free rein and little, to no direction.
Keep in mind, the things he did observe have not been proven to be untrue. The biggest problem is that the interviewers failed to get enough details out of him.