Baker made it in time to meet LHO at the 2nd floor lunchroom.
Since Lee told Fritz that he was in the first floor lunchroom when JFK passed by the TSBD and JFK was shot just seconds later at 12:30.... And Baker encountered Lee in the second floor lunch room with a coke in hid hand at 12:31 : 30 then clearly it took Lee about a minute to travel from the first floor lunchroom to the second floor lunchroom. Lee was probably entering the second floor lunchroom about the time Baker and Truly started their trek to the TSBD roof.
LHO said whatever he thought might help him appear to not be the shooter. He told Holmes he came down to the lunch room encounter with Baker.
Mr. BELIN. Did he say where he was at the time of the shooting?
Mr. HOLMES. He just said
he was still up in the building when the commotion-- he kind of----
"Commotion" --- Thats what Marines call gunfire?
He was up in the building when the assassination took place. Not on the steps. Not in the first floor lunchroom. He was on the 6th floor.