Focus John. The discussion was what could cause Frazier to as you claim, misremember and I stated that Oswald coming home midweek was a change of routine and along with the curtain story, Frazier now had a narrative to remember.
Because it was a Friday rather than a Monday, Frazier would have a special reason to remember the details differently than any other ride to work? Seriously?
Apparently according to Edward Shields, it must have not been all that uncommon for Frazier to give Oswald a ride to work.
SHIELDS: I think Charles Givens hollered out there and asked Frazier where was his rider and he told him: "I dropped him off at the building." Yeah, that was it...Well, I was down on the floor when they hollered out and said and the answer he gave them, I don't know, I think he said: "I dropped him off at the building." Now, whoever it was hollering asked him, I don't know.