Well, I will say what I always say, and that is my layman's view of the Z-film shows Gov. Connally shot ~Z-295, and JFK at Z-313. About one second apart.
The SBT requires that JBC, after being shot through the chest, having his right wrist fractured, and a slug burrow into his left leg...only then did JBC a 180-degree turn in his seat to look for JFK.
But, in real life, JBC described turning around to look for JFK after hearing the first shot. And then getting struck by a shot he did not hear as he began to face forward again. That is accurate, IMHO, fro my review of the Z-film.
Then there is this:
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)
That happens about ~Z-295. JBC describes himself as immediately incapacitated by the shot that struck him. No 180-degree turn.
From this, I deduce there was a second gunsel behind the JFK limo. The GK smoke-and-bang show may have been another gunsel, or a diversion. Or kids playing with firecrackers.
LHO remains the most likely suspect for the TSBD6 sniper. Indeed, LHO is the only JFKA suspect known beyond reasonable doubt to have been in Dealey Plaza 11.22. This makes unraveling the JFKA almost impossible.
I do not know who were LHO's confederates or handlers on 11.22. Might have been Alpha 66'ers, or G2, or G2 plants in Alpha 66, double agents.
Likely the plot in its entirety was three people, LHO the other gunsel and the GK player.
Such a small plot was hard to detect, even after the event. LHO was soon dead. Maybe even a patsy of sorts.
---30---
Of course, we all know Mossad perped the JFKA. Just ask Jeff Morley. Mossad was tight with James Jesus Angleton...so you know...that's a fact pattern.