Has anyone else experienced something similar? I was checking my friend in per his request online...just for ..... and giggles, I decided to see what was offered for SDC. He was flying MXP-EWR-ORD but the SDC online offered MXP-MUC-ORD. As far as I know, MXP-MUC isn't UA...it's LH operated by Air Dolmiti. Thought it was a bit strange as I thought SDC was only valid for wholly operated by United itineraries.