IOW, never mind what the guy who actually experienced the wound said about when he was hit, even though he spent considerable time analyzing the Zapruder film, first with the WC and then with LIFE magazine in 1967. When he studied the film with LIFE, he studied a high-quality print under high magnification. He insisted he was certain he was not hit before Z229.
But, WC apologists cannot accept this because it destroys the single-bullet theory and the lone-gunman theory. So they assume that the guy who actually experienced the wounding, and who knew himself better than anyone else, just could not really discern when he was hit.