The question is: where did Mr Oswald dispose of his empty coke bottle?
If he went back up to the second floor lunchroom to put it in the empties crate, at a time several minutes after the assassination when "everybody was walking and milling and so forth" in the office area, could this have been the time he and Ms Reid had their real encounter?
In 2013 Mr Buell Wesley Frazier told the late Mr Gary Mack that, some 5 or 10 minutes after the shooting, he saw Mr Oswald walking south by the Houston St side of the Depository and then crossing Houston & then Elm before disappearing from sight. Mr Frazier was emphatic that Mr Oswald could not have exited via the front entrance but must have done so via the back dock.
If he's correct about all this, and if my surmise about the true timing of the Reid encounter is correct, we get the following:
1. Mr Oswald buys Coke in lunchroom
2. Mr Oswald goes down to one to eat
3. Mr Oswald goes outside to watch the P. Parade, and is on the front steps at the time of the shooting
4. Mr Oswald----seconds later----has an exchange by the front door with Officer Baker (before Mr Truly comes up)----Officer Baker is asking him "Do you work here?" because he needs someone to point him to the nearest stairs
5. Mr Oswald----some minutes later----goes back up to two to leave his empty Coke bottle in the crate (and is noticed on his way there by Ms Reid, who speaks briefly with him)
6. Mr Oswald goes back down to one and exits by the rear dock
7. Mr Oswald is seen by Mr Frazier leaving the area
On 11/23 Chief Jesse Curry told reporters that an officer had spotted Mr Oswald in the lunchroom
in the presence of several other employees. It is
possible therefore that we need add another item to the above timeline:
5a. Officer Baker, on his way back downstairs from the roof with Mr Truly, sticks his head in the lunchroom door and asks Mr Truly, "Do all these people work here?" or somesuch. One of the people in the lunchroom is Mr Oswald, who is there to deposit the empty bottle in the crate.