Single Bullet? No!

Dale Meyers has some very well backed-up facts that there was a single bullet that hit both Kennedy and Connelly. He used a computer generated simulation of the zapruder film and animated Kennedy and Connelly's exact movements. Meyers said that when the second bullet goes off, the two men react simultaneously. He showed on his computer that both their bullet wounds are in areas that make perfect sense for a single bullet. It passes in through Kennedy's back, then out his throat continuing into Connelly's back. He also used the fact that their movements coincide with the bullet wounds. Everything Meyer's said makes sense to me, but he forgot to add some important information. His single bullet theory only accounts for two wounds. Connelly also had a bullet pass through his wrist and thigh. How is that possible for one single bullet? Also, Kennedy's fatal shot caused his head to go back and to the left. Back and to the left. Back and to the left! Oswald couldn't possibly shoot a bullet to make Kennedy's head move in that way, since he was positioned behind him. That means there had to be a conspiracy.