That would imply that you know exactly when the throat shot was fired.
That would imply that you know Oswald fired a rifle.
Regarding the throat shot, it's well known that that shot was between frame 210-240 and the head shot was at frame 313. My opinon is that Connally is reacting in frame 222 of the Zabruder film. However I think, as others do that JFK was hit in frame 215 and the head shot was at frame 313. The 8mm camera used by Zabruder takes 18 frames per sec, so the time between the throat shot and the head shot is 5.4 seconds. Obviously could be a few tenths of a second each way. But in any case that gives the shooter at least 5 seconds to fire the head shot. You obviously know this so the only issue is who was the shooter. I think it was Oswald and that he acted alone.