Why not base your analysis on the evidence? Do you really know that JFK is not already reacting in z224?:
Yes, I really know that JFK is not reacting in z224
It's explained in detail in the OP.
JFK's reaction to being shot through the throat is for his hands to reflexively fly upwards towards his throat. His elbows hyper-extend upwards.
His
left arm is shown still down by his side as he emerges from behind the Stemmons sign at z224, indicating the reaction is yet to begin.
His right hand moves DOWNWARDS between z224 and z225, also indicating he is yet to reflexively react to being shot.
This is shown in the Z-film.
Why don't you accept this evidence?
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How does the bullet miss his hands? Why do witnesses on Elm St. put it earlier (before the VP security car finished the turn; Linda Willis: while JFK was in her sightline to the Stemmons sign;just before Phil Willis took his z202 photo, as JFK approached the Thornton Freeway sign)?
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How does the bullet miss his hands??

The Z-film speaks for itself.
Accept this primary evidence.
We have thrashed through this at "The First Shot" thread and your arguments were crushed down to the last detail.
I'll let that record stand rather than get dragged into your endless nonsense again.