Originally Posted by
kingalien
Plat in the middle is likely due to a last minute tix purchase.
Doesn't sound likely, as the non-elite first-timer on a Y fare (assumed, based on description of situation -- SW ticket endorsed over to CO) got an open F seat. That means that there was A inventory available, and a Plat buying a last-minute ticket (aka Y fare) would have been upgraded on the spot.
CLG