FlyerTalk Evangelist and Ambassador: The British Airways Club
Join Date: Jun 2008
Location: Somewhere between 0 and 13,000 metres high
Programs: AF/KL Life Plat, BA GGL+GfL, ALL Diam, Hilton Diam, Marriott Gold, blablablah, etc
Posts: 33,172
It's not a milestone. lifetime TPs are only going to matter with regards to LT Gold and LT GGL, so if anything you could argue that when you reached 17.500 TPs, this was your 'mid-course' threshold, but 20k is basically nothing -- or maybe 20% of LT GGL if you really must.