You explicitly quoted Bell with
and then went on not answering this at all.
So please: explain to us what the hell the relevance is of AA11 hitting or not hitting some center column?
For example: Does the center column have any properties that its neighbours don't have, other than the aesthetic or honorable property of being, well, in the center? Does it have any special role in the static construction?
A similar question also applies to the cockpit of the plane. What is special about the cockpit that makes it matter so much where the cockpit hits? In terms of destructive projectile power, the cockpit is just an empty space for the pilots to occupy. I'd worry more about where the nose landing gear (a dense cluster of heavy machinery) or the keel at the bottom of the fuselage (the largest and strongest part of the airframe) hit. According to the diagrams posted above, those did not hit anywhere notable.
Respectfully,
Myriad