Frame 133 - Presidant’s car is clearly visible.
Frame 160 - First shot (missed). Connally looking left,
hears shot, turns right.
Frame 222 - Connally emerges from behind sign.
Frame 223 - 224 - Connally’s jacket changes as bullet strikes him.
Frame 225 - Kennedy emerges from behind sign, hands moving to throat, already hit.
The bullet was moving considerably faster than “several hundred feet per second.” It was, in fact, fired from a gun with a muzzle velocity of over 2000 ft/sec. That bullet could easily have pierced both bodies within a fraction of a second.
Your use of the “Any reasonable person...” scenario is not valid. I am now questioning your conclusion that a conspiracy was obvious.