No, the goof was that your first and second sentences were logically incompatible with one another!
"Oswald stated that on November 22, 1963, he had eaten lunch in the lunch room at the Texas School Book Depository, alone" (Bookhout report, 11/23)
"OSWALD stated that on November 22, 1963, he had eaten lunch in the lunch room
at the Texas School Book Depository, alone, but recalled possibly two Negro
employees walking through the room during this period. He stated possibly one
of these employees was called ‘Junior’ and the other was a short individual whose
name he could not recall but whom he would be able to recognize."
He knows to mention only two people he saw in the area: Messrs Norman & Jarman. How does he know there weren't others in a) the domino room b) the rear area of the first floor? Because WE know there weren't.
It would have been odd for anyone to be in the Domino Room after 12:15 with the President about to pass by. Even Eddie Piper tried to get a look at the motorcade. Oswald knew just eating his lunch alone wasn't enough, that it needed some "confirmation" in the vague presence of Norman and Jarman. Actually the two regularly hung out together during breaks.