JC:
I agree about the JFKA receding into the past, and surely the age of various JFKA researchers is...well, grey hair or bald heads and more than a few passings of late. Some senility seeping into conversations at Ed Forum.
No one has ever even come close to establishing real boots on the ground in Dallas, real identities, if LHO had any co-conspirators, or manipulators in Dallas on 11/22. There is some plausible speculation and much implausible speculation.
Even worse, in desperation to stay relevant, some JFKA researchers are hopping onto current bandwagons, such as Jeff Morley defecating on himself and dog-whistling to Tucker Carlson that "Mossad" played a role in the JFKA.
All that said, my layman's analysis of the Z-film is Gov. JBC is shot at ~Z-295 and JFK at Z-313. JBC testified he was "knocked forward" by the blow to his back, that happens is about one second apart, or in too-rapid succession to have been accomplished by a lone gunsel armed with a M-C carbine.
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 two 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)
Clear as day, that happens ~Z-295.
I am open to participation in the JFKA by elements of Alpha-66, G2, or JMWAVE.
I place very low probability on much higher levels of participation in the JFKA.