Certainly true one can infer a lot of different scenarios. Unfortunately Jacqueline who must have saw it all was forced into silence.
I like to observe her reactions because she is the one facing the Zapruder camera at all times.
When JFK gets shot, she is looking right at him and continues to look at him while bringing her hands up to stabilize his left hand.
It appears both his hands go towards face (choking?) and then the right hand drops down to chest. Trouble breathing or is this the point (shot) where the pain is coming from? Is he giving a thumbs up and then the thumb drops down at Z266? Any thoughts on that one?
Jacqueline moves her attention to Connally at Z253 and her gaze remains centrally fixated there for the next 3 seconds. Meanwhile everyone else in the car, the driver, the front SS agent, Connally and his wife ALL simultaneously turn around and end up looking at the President (Z283 shows that). At Z291, Jacqueline changes from looking at Connally back to looking at her husband. She might have noticed them all looking at him. She seems to be examining his chest if you look at where she is looking. Not his head or neck. The position where JFK initially placed his right hand after the first shot is my guess. Was there a wound there? What was Jacqueline looking at in that area? Again, complete silence and the most critical observation was willfully neglected to be recorded.
Connally didn't seem to concerned about the hit he took. He did not use his good? arm to go to his point of pain and no indication of shortness of breath. He must have had quite the adrenaline rush as he didn't collapse. If you recall he had one rib totally pulverized according to reports with the same bullet striking his wrist and leg I believe. He turned right around and looked directly at JFK to see what was going on with him. By Z330 he had his head below seat level and then brought it back up to just behind the corner post of the driver. Nellie can be seen putting her head and body behind him and near JFK's legs at the very same instant.
Meanwhile the SS agent in passenger seat had his head down below at Z330 and the driver had his head closer to the windshield. If he was putting on the brakes, his head would come forward and so would everyone else. However no one else in the car reacted like he did. We also know he must have been driving very slow at that time because the SS agent ran up from the followup car and hopped on. 5 mph would be likely. Yes there can be a lot interpretation!