I had a flight originally booked in X from MAD-MUC-SFO. Due to schedule changes, it was rebooked in YN MAD-EWR-SFO on UA metal, without taking additional miles - so I only paid 30k. The flight is after dynamic pricing kicks in.
1. Would I be able to SDC Ewr-Sfo into any flight with economy seats available as my current class is YN?
2. Could I check a bag in MAD and sdc via the app for ewr-sfo, since I could pick up the bag at ewr and not do the bag drop..?