Mrs Garner was on the 4th floor by the rear staircase and saw Baker/Truly coming up using the staircase =
Encounter on 4th floor improbable
Not necessarily! If Ms Garner sees Mr Truly vouch for a man as an employee, it will not even occur to her that the man is anything other than an employee. Unless she is an unusually suspicious person, she will assume that the building superintendent knows what he is talking about.
As such, the encounter will be no more memorable to her than, say, seeing Messrs Jarman, Norman and Williams coming down on to the fourth floor a little after that. After the event, the presence on those stairs of any manual worker
other than Mr Oswald, the accused assassin will appear to have no significance.
Mr Barry Ernest spoke with Ms Garner in 2011:
Being in the position she was as quickly as she was, I asked Mrs. Garner if she happened to notice the escaping assassin on the stairs.
She laughed at the question.
"No, I don't remember that. I don't remember seeing him at all that day…except on TV."Actually, she may well have seen the escaping assassin by the stairs. But-----------because he was not the employee whose face would soon be on TV-----------she may have failed to understand what she was seeing: Mr Truly, the building superintendent, tricking the motorcycle policeman into believing that a non-employee was an employee and hence ok