I couldn't find the answers to these questions and, with Delta expanding their Asia codeshares with KE, I'm sure others have the same ones, so:
1. If I book a Y/B/M Delta Codeshare as a Delta flight with a DL flight number (say SEL-BKK) which is operated on KE metal, can I still use my PM upgrade certificates to upgrade from coach to business?
2. Again, if I book a Delta Codeshare as a Delta flight with a DL flight number in business class, will I get 2X MQMs?