JC-
There is the possibility of nearly simultaneous shots heard as one shot (by most witnesses), or use of silencers.
The LNT theory remains implausible due to witnesses such as Bowers (testifies as to rapid cadence), and the smell of gunsmoke in the GK area in the immediate aftermath of the JFKA. The wind was blowing from GK towards the TSBD.
Gov. JBC's testimony lines up with him being shot ~Z-295.
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)
The HSCA-1979 concluded there was a high probability of a gunshot from the GK, and of a JFKAC. That was the last official investigation (the Luna Committee not being an investigation, but rather a Gong Show).
I do not pretend to know who conspired with LHO. I know leads to Havana and Moscow were snuffed out by the WC following instructions from President LBJ.
As the LNT is implausible, by deduction there was a JFKAC.