Only person who knows the precise truth is the guy who paid for the assassination...
LBJ took the details with him to hell...
When I moved to Texas in 1978 I hesitated for a long time to talk about JBJ and JFK. One day when we were sitting arounf and BSing I asked the native Texans if they thought LBJ was behind killing JFK and to a man they all said “Of course he was”.