Kinda quirky and only available on the website, but here's a good explanation: https://thepointsguy.com/loyalty-programs/united-expert-mode/
Back in the late 90s/early 2000s yahoo travel used to show the same data for *all* us airlines. Was way too easy back then to game the system for comp upgrades on CO.
Back in the late 90s/early 2000s yahoo travel used to show the same data for *all* us airlines. Was way too easy back then to game the system for comp upgrades on CO.