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: 100,409
I would have hoped and expected that DL would at least check bags through for SkyTeam (and other partner) connections or for elites.
IIRC there are some rules about using miles or SWUs to upgrade and not being allowed to have other airline flights on the same ticket, but I'm not sure whether this has generally been enforced.