What a pile of BS!...... Perhaps you should back up to page one ..... Lee Oswald was in the first floor lunchroom at 12:27. He could not have been on the sixth floor at the time JFK was ambushed and murdered. This very elementary FACT flushes al of your BS down the drain.
You might have something with the "lunchroom alibi" thing, except we don't know for sure that Jarman and Norman entered the building at 12:27. They said it was more like 12:20 to 12:25. The two men were familiar with the area; if, at 12:24, they heard "Just crossing Ervay Street" on the police radio, they would have known that the motorcade was on Main. Or someone in the crowd could have said so. If Oswald was in the lunchroom at 12:25 and saw Jarman and Norman, he would have time to ascend the stairs.
Fritz's notes on this are not specific. Also, if Jarman and Norman had gone to, say, to the SW corner of the fifth floor rather then the SE corner, that would help the idea that Oswald was in the lunchroom and saw the two men go by. But the men two men showed up beneath the SN window affording Oswald the opportunity to know that Jarman and Norman were together during lunch (as Oswald might have seen them together regularly previous to Nov. 22nd). Entering the building from the front or rear means passing through the first floor (to access the stairs or elevators; they could cross the second floor from the front but that route was probably not for warehouse workers). Crossing the first floor means they could have been visible to someone (depending on where they were seated or standing) in the first-floor lunchroom.
Not hard to rationalize without actually witnessing it. Oswald could have put two-and-two together. It was an ad hoc after-thought "ghost alibi". Now, if Oswald had really seen the two men cross the first floor, he would have expanded on what he saw, such as the two men entered through the rear. That would have been the clincher. But guessing that would have been taking a huge risk.
Then one has to wonder why Oswald--who was so politically-minded, subscribed to Time, read newspapers and borrowed books about politics--didn't bother to join his coworkers outside to watch the Presidential motorcade so by (didn't Marina say Lee liked JFK?). Then you expect people to disregard the "long bulky package" Oswald took to work that morning, his prints on boxes at the Sniper's Nest and on the rifle, his behavior after the assassination, in which he was in flight murdering a policeman and trying to hide in a movie theater.