Originally Posted by
MSPeconomist
Be careful if VS flights are involved. You earn DL miles on VS operated flights only if they're either sold under their native VS flight number or as DL codeshares. If it's a AF or KLM codeshare, you get nothing on DL (because VS isn't (yet) a SkyTeam member, only a bilateral partner of DL and of AF/KLM).
Data point: I flew VS recently (earlier this month) TATL on a KL codeshare flight crediting to Delta. It did not post initially, but after I submitted a manual mileage request following the 7-day partner default posting period, it has now posted.
Maybe the new partnership has been implemented on the earning side now?