A FlyerTalk Posting Legend
Join Date: Sep 2009
Location: Minneapolis: DL DM charter 2.3MM
Programs: A3*Gold, SPG Plat, HyattDiamond, MarriottPP, LHW exAccess, ICI, Raffles Amb, NW PE MM, TWA Gold MM
Posts: 100,393
Have you looked for information about this in the AF forum?
BTW, to receive these offers, it might make a difference whether your flight is marketed by AF (i.e., not using a DL codeshare flight number) and with the ticket on AF stock.