Connally's lapel flip at Z224. The exiting slug missed the lapel by a mile. And in any case it was at Z218 plus or minus a frame or two. What caused the lapel to flip?
Did the slug exit a bit side-on? In which case it shook the whole coat. And that shaking caused the lapel to stand up at Z218 -- which Zapruder didnt show koz it woz black on black. And then a gust flipped the lapel further so that Zapruder did show it.
I deal with the lapel flip in
A Comforting Lie.
As you note, there is no bullet hole in the lapel of Connally’s jacket. The actual hole in the jacket is about
12 inches from the lapel and 2 inches below the right nipple. The passage of a bullet through cloth almost a foot away from the lapel could not have caused the lapel flip.
There was a strong wind blowing intermittently in Dealey Plaza during the shooting. If the lapel flip is not an optical illusion, and if lapels can flip up and down in only 18th/second, i.e., 55 milliseconds, the wind gusts would be the only logical explanation. But can lapels flip up and down with such incredible speed, even if blown by a gust of wind? This seems highly unlikely.
David Wimp argues that the lapel flip is an optical illusion caused by reflected light. See his article “The ‘Lapel Flip’ as Reflected Light."
Another possibility is that in the original, unedited Zapruder film, the lapel flip did not happen with such impossible, lightning-fast speed, and thus was simply the result of a gust of wind. But, if the original film likewise showed a 55-millisecond lapel flip, then Wimp's theory is the most plausible explanation for it.