OK Andrew have it your way. Connally didn't feel or react to the bullet that entered his thigh for 4 seconds. And JFK shows a reaction to a bullet passing through his body before passing the sign.
Should I believe you or my own eyes ?
Neither. You should carefully look at ALL the evidence and reach a conclusion that best fits all of the evidence. Where there is a conflict between pieces of evidence, look at the rest of the evidence to resolve the conflict.
What you think you see with your own eyes does not fit large independent bodies of consistent and independent pieces of evidence. If you ignore that fact, you will only deceive yourself.