Dear FPL,
1. Maybe Oswald didn't realize how difficult a shot it would be.
2) Since the Secret Service follow-up car had just turned onto Elm Street at "Z-124," the "hung over' agents in said car would have had to break their necks to look up at Oswald's sixth-floor Sniper's Nest window.
-- Tom
Oh, dear, now we're getting desperate.
1. So if he didn't recognize the difficulty he was in fact not the sharpest "former Marine sharpshooter" tool in the shed? Even if this is true, he surely knew he'd have to contort himself and get in position for any subsequent shots. Why would he go through this exercise - perhaps he assumed he'd need only the Z-124 shot (which doesn't seem consistent with the way the boxes were stacked)? I realize you're absolutely enamored of the Z-124 theory, but as far as I can tell it's based entirely on supposed "witness reactions," which seems like thin gruel at best.
2. The risk of being seen was scarcely limited to the SS agents. At Z-124 pretty much everyone in the vicinity would have been looking more in the direction of Oswald than after the limo was well past and moving away from his position.
(Is your new avatar someone famous, because I have no clue? I thought we had agreed you were going to give QAnon Shaman a tryout.)