You failed to comment on two important parts of Woodward's account:
After acknowledging our cheers, he faced forward again and suddenly there was a horrible, ear-shattering noise coming from behind us and a little to the right.
From where Woodward was standing, "behind us and a little to the right" would be
the grassy knoll.Woodward was standing about 30 feet east of the freeway sign on Elm Street and about 8 feet west of the first street lamp on Elm Street. The TSBD was about 30 feet east of her (or to her left). A gunshot that came from behind her and to her right would have been a shot fired from the grassy knoll area.
Interestingly, Abraham Zapruder also said a shot came from behind him. Zapruder was standing on the retaining wall on the grassy knoll.
The President and Mrs. Kennedy turned and looked around, as if they, too, didn’t believe the noise was really coming from a gun.
I believe her, but this event is not seen in the extant Zapruder film.
Similarly, dozens of witnesses from all over the plaza said the limousine stopped or markedly slowed, but no such event is seen in the extant Zapruder film.
Witnesses described seeing other important events that are not seen in the Zapruder film.