The FBI Report by Bookhout & Hosty, 11.22.1963 (dictated 11.23.1963, dated 11.23.1963), does not mention the specific location of Oswald on the first floor at the time of the assassination nor does it mention any encounter involving Oswald, a police officer and Truly.
If the earliest evidence as to the location of Oswald during the assassination is true—and we believe the earliest reports and statements are the most reliable—the reason for these details not being mentioned should be clear and painfully obvious.
If Oswald told Bookhout & Hosty what the earliest reports all describe (i.e. he was down in front during the assassination)—and they included this information in their report—well that would be a huge problem if he was to be the designated patsy. No, no, not gonna happen.
But things got easier on 11.24.1963, Oswald was killed. He could no longer talk or defend himself. He would no longer say things like he went outside to see what the excitement was all about. He would no longer answer any questions about where he was or what he was doing at the time of the assassination with responses like "out with Bill Shelly in front."
So on this very day, Bookhout writes a second, "improved" report, having the now-dead Oswald "confirm" a lunchroom encounter on the second floor, simply moving the key details of what he said all along (Coke, standing outside, police officer, Truly) from the first floor up to the second.
Let that sink in for a minute.
Whoever says dead men don't talk never talked to FBI Agent James Bookhout.