[...]
You posted:
"Charles Brehm said shot one hit JFK in neck, shot two hit him in head, and shot three was fired after the head shot. So that leaves the shot Connally heard before Z-224."
My previous reply:
Brehm was mistaken.
My reply to your rude demand that I "provide the link":
Connally heard Oswald's missing-everything shot that was fired half-a-second before Zapruder resumed filming at Z-133.
JFK and Connally were both hit by the shot that was fired around Z-222, and JFK was hit in the back of the head at Z-313, causing it to go forward and downward about two inches between Z-312 and Z-313.
D'oh