You have provided your layman's view of the JFKA, as seen through the Z film.
You gloss over Gov. JBC making a 180-degree turn in his seat, to look backward, after being shot through the chest (in your layman's view).
Then we have JBC's testimony:
Connally: I was knocked over, just doubled over by the force of the bullet. It went in my back and came out my chest about 2 inches below and the left of my right nipple. The force of the bullet drove my body over almost double and when I looked, immediately I could see I was just drenched with blood. (1 HSCA 42)
Your version requires that JBC did not recognize when he was shot through his chest. OK.
Bottom line: The LNT requires a lot of selective and biased sifting through the evidence...one reason the official HSCA investigation concluded there had likely been a JFKAC.
Many CT's require the some suspension of disbelief. Same with the LNT.