I suggest you to have a first look at this animation (warning : 740K!). It is an animation of frames 222 to 262, centered on JFK and Connally.
It will show you the totality of the piece of the film that will be analyzed here step per step.
I will focus first on the following frames:
The same pictures, animated
Any person looking at this will already conclude that Connally is hit at that moment and that both men react at the same time.
But it is not that simple in the world of conspirationists. So I will analyze these image very carefully in the following pages.