Wrong. It's helpful in that it allows me to position Connally as much as 8.6 inches inboard of Kennedy if I need to.
And there you have it. You start with the conclusion that they were wounded by a single bullet fired from the SE 6th floor window of the TSBD and you move the bodies around until the wounds (or where you assume the wounds were) sort of line up.
Z193 was about 1.6 seconds before the shot. The positions of the two would have changed very little in that small amount of time.
Another claim made without any evidence. You don't think a human body can move significantly in 2 seconds?