Your dismissal of contrary evidence is remarkable. You simply ignored most of the facts and repeated the standard SBT scenario. Some points in reply:
-- The HSCA photographic experts were not "demonstrably wrong" in pointing out that at around Z200 JFK starts to turn his head "rapidly from right to his left in the direction of his wife." What are you talking about? What Zapruder film are you looking at? In Z190 he is looking to his right and waving at the crowd. This clearly changes by Z202. When he reemerges into view in Z225, he is facing straight ahead and reaching for his throat. I'm baffled that you would deny the right-to-left movement of JFK's head from Z199-207.
-- Jackie's reaction is key and indisputable. Starting at around Z202, she begins to rapidly whip her head from left to right and starts staring at JFK. She is still looking intently at him in Z224. Why do you suppose Jackie snaps her head to the right before Z207? What drew her attention so suddenly to JFK? The answer is obvious to anyone no blinded by the SBT.
-- The fact that JFK is clearly reacting to a shot in Z225 means he could not have been hit later than Z221, as even Dr. Piziali conceded during the ABA mock Oswald trial. Dr. McCarthy confirmed this during the trial. This fact alone refutes your Z222-223 SBT, not to mention Connally's lack of reaction before Z234. (A tensing stiffness and look of concern are hardly a wound reaction. Connally had just heard a rifle shot and was trying to see if JFK was okay, so naturally he stiffened a bit from tension.)
-- The second-strongest blur episode in the Zapruder film occurs at Z190-200.
-- Even the WC's experts recognized that JFK shows reactions signs as early as Z199 and Z204-205, as did Olson and Turner.
-- Of course you reject Willis's matter-of-fact statement that he snapped slide 5 in response to hearing a shot, never mind that this correlates perfectly with the blur episode.
-- Connally himself, the man who actually experienced the wounding, insisted he was not hit before Z229. He did so after spending hours examining the shooting sequence under high magnification.
Clearly, you are in denial Michael.
Let's focus on one aspect of your argument at a time.
This is z207 taken from the Zapruder film:

The top of JFK's head is circled in red. This is the last frame we can see him before he passes behind the Stemmons sign.
Here's what might appear to be an obvious question:
Do you believe this is actually frame 207 taken from the Zapruder film?If you have another copy of the Z-film with a different z207 please post it.
Below is a close-up of JFK taken from the still above:

There can be no doubt that this image reveals that JFK is still looking to his right as he passes behind the Stemmons sign.
This is photographic proof that you are wrong in your assertion that he is looking towards Jackie.
Do you agree that this image proves JFK was still looking to his right as he passes behind the Stemmons sign in the Z-film?If you don't agree could you provide actual evidence to support your view rather than simply insisting the photographic evidence I've presented is wrong.
There is not a single Z-frame from z199 to z207 that shows JFK looking in the direction of Jackie. If you disagree with this please post the frame to demonstrate this statement is incorrect.
You argue that "In Z190 he is looking to his right and waving at the crowd. This clearly changes by Z202", but you neglect to provide evidence to support this claim.
Ironically, Willis#5 is thought to be taken at the same time as z202 and, as I've already posted (and which you have ignored) it shows JFK has not turned to his left as we would see his profile:

If anything, it shows he is still looking to his right just as he is in z202:

The same photographic evidence you use to make your point actually demonstrates you are completely wrong in believing JFK makes a rapid head turn to his left just before he passes behind the Stemmons sign.
That you can bring yourself to deny this evidence when it is before your eyes is baffling.
Please provide actual evidence to support your claims other than 'the HSCA said so'.