Originally Posted by
orbitmic
I think all 'super statuses' are normally airline specific in benefits, including GGL despite occasional experience of CK treatment for transfers, but qualification is for all level miles so DL flights (or any other Skyteam for that matter, with pretty good coverage across continents) would qualify, as would presumably do qualifying spend on AFKL Amex cards (need a bank account in France or Netherlands).
I've had more CK support from AA than I have had Special Services from BA as a GGL!