While enhanced versions of the Z-film provide us with lots of clues, viewing a stock version of he film at normal speed does have value as well. If one focuses on JFK and JBC immediately after the emerge from behind the sign, one gets the sense that the reaction by both men to being shot is almost immediate. There is less than a half second between the time JBC emerges and he flips his right arm upward and then twists and dips to his right.
