Lee was NOT in the first floor lunchroom ( the Domino Room) when Jarman and Norman passed by at 12:26 , even though he said that he was.... He was staying out of sight, and he was in the shower that was just off the Domino room. Lee could see Jarman and Norman walking across the loading dock and approaching the back door of the shipping room, so he slipped into the shower so that they couldn't tell anybody that they had seen Lee Oswald on the first floor just a few minutes before JFK was murdered.
More speculation and no factual evidence.
Junior Jarman and Harold Norman walked through that second floor lunch room and remembered that there was “someone else in there”. When Oswald was being interrogated, he remembered two black employees walking through the lunch room while he was inside the room.
Also, a Dallas police officer and Oswald’s boss testified seeing Oswald in that same lunch room less than 80-seconds after the last shot was fired.
So Mr. Cakebread, how could Oswald be in the "shower" as you claim when testimony proves Oswald was in fact in the lunch room seen by a cop and his boss? And don't forget Jarman and Norman possibly saw Oswald as well.