Nonsense. How much time do you think elapsed between the first and second shot ? How many shots do you have being fired ?
It doesn't matter what I think. What matters is what people who were there recalled. They recalled that the last two were in rapid succession. They recalled a pattern to to shots: the time between 2 and 3 was noticeably shorter than between 1 and 2. That necessarily means that there was only one shot before z250 , which is well after JFK began showing reaction to his throat wound.
But for the sake of argument let's assume this preposterous suggestion that JFK is hit by the first shot and then JBC is hit by the second shot several seconds later (even though the Zap film clearly shows that both men are wounded simultaneously or in extremely close proxmity), is correct.
Why is it preposterous? How do you explain the evidence from many independent sources that JFK reacted to the first shot? Why did no one see JFK smile and wave for 3 seconds after the first shot?
What happened to the bullet that hit JFK in the back and exited his throat ?
You tell me. All I can say is that it was travelling on a downward and right to left trajectory through JFK's neck exiting to the left of his tie knot, likely traveling straight but tumbling at about 1000 to 1500 feet per second. It would have travelled another 5 inches farther left before crossing the plane of JBC's seatback. This was well to the left of JBC'right armpit. Since it does not appear to have struck the car and it did not strike JFK's hands, it must have hit JBC. The question is where?. All I can say is that it was not his right armpit.