Originally Posted by
Vulcan
For B fare passengers. I believe that Plat/Gold are considered on the same level, but date of being put on the list is paramount. Thus a gold going on the list today will be above a Plat going on the list tomorrow.
Nope.
For mileage upgrades Gold and Silver elite are treated as the same level and fare class is irrelevant. So a silver on a Q fare today trumps a Gold on a B fare tomorrow. A Platinum on an L fare added next week trumps both of them.
These details are covered in the FAQ.