It is not my analysis. I am just repeating the evidence. Your analysis says that the evidence is wrong.
You are repeating your very poor analysis of what you see JBC doing after he was shot. He is clearly dipping and doubling over to his right in reaction to the bullet that just passed through his chest and you think he was turning to see JFK. If that's why he was turning, why the hell are his eyes looking down to his right? Your explanation of his movements following the shot are as FUBAR as it gets.
This is a classic example of trying to drive a square peg into a round hole. You are trying to force fit the evidence to your beliefs rather letting the evidence dictate your beliefs. The only thing dumber than your belief that JBC wasn't hit until Z270 is Benjamin Cole's belief he wasn't hit until Z295. I'm sorry but you only get the silver medal for silliness in this event.