Originally Posted by
irishguy28
I don't know where you found that text you quoted.
The only thing that extends mileage validity is the taking of a level-mileage/XP-earning flight.
From here:
https://explorefurther.flyingblue.co...n=fbreinvented
Click on 'Explore Now"
Click on "Get New Opportunities"
Click on "Read More"
And there's a heading on "Miles validity: other partners"
Where the text about commercial partners and expiration comes from. I'm trying to figure out how to correctly parse that in relation to the part about one flight every 24 months to prevent expiration.