Nixon departed about an hour before Kenedy touched down I believe. Don’t know about the others but I believe GHW Bush was in Tyler, 90 miles away.
Smart enough to create an alibi. Connally did as well. Bush tried "I don't remember where I was" but then some folks came through with the Tyler story.
Some shots came from the rear, and LBJ was in the car behind him, wasn't he.
I guess it's been long enough to let the cat out of the bag. Ari Onassis. Coincidence that both of Ari's kids died young?
Of course, after Ari's son died in a plane crash, JFK's son would die in a plane crash. Sending a message?