So you wanna horse around with the sharp shooter dodge? What about the SS Agent Howlett that Max is wheeling around and even has him on the lift eyeballing the signal light support beam with him? That agent physically details the shooter standing/sitting position as well as the box he sat on leaving print(s). I don't mind helping you, but if you are going to try and get slippery with me, well, that goes to character. I don't have the time to mess around with anyone lacking in character. I search for the Whole Truth.
Dear Sonderführer Storing,
That box was too far from the window for Oswald to sit on while firing his second (at approx. Z-222) and third (Z-313) shots.
He sat on it while waiting for the motorcade to appear on Houston Street.
The person wearing the white shirt (t-shirt?) in that window in the digitally enhanced Hughes film was standing as the limo was turning onto Elm Street.
Oswald was wearing a white t-shirt that day under his long-sleeved brownish-reddish shirt. He probably took that long-sleeved shirt off while he was killing JFK and used it to wipe his prints off the Carcano.
Oswald's missing-everything shot at hypothetical "Z-124," half-a-second before Zapruder resumed filming at Z-133, was sufficiently downward angled as to require him to awkwardly semi-crouch and lean forward while firing it.
Stop conflating, if you possibly can, that shot with Max Holland's theorized shot a full second earlier at hypothetical "Z-107."
-- Tom