A. John Connally (JBC) was 6'2". His legs did not fit in the small area up to the partition in the X 100 limousine. He therefore had to sit with his legs angled to his left or right. Being a politician, he faced the crowd so he angled away from his wife and towards the nearer crowd on his right. His angled lower body created the path for the CE 399 bullet to end up there. It also allowed him to flop backwards starting about F 275.
That angling put his hips to the left of the centerline of his seat. It was the major reason why he was sitting 6-8inches inboard from JFK, and turned in general to his right. At F 222, JBC was just turning back from having looked back towards LHO's first shot, so his torso was more rotated to his right than is shown here; it was aligned for the single bullet, CE 399, at F 222-3, after it was slightly defected by hitting JFK's trachea and tie.