have you been having trouble with using priority line or getting into lounges lately? I posted about this in dl forum before, but even today, checking dl.com, it shows CZ as a partner for earning and using miles, as well as getting to use priority check in and getting lounge access on same day international itineraries.

Flying to Vietnam next week, and chose a slightly worse schedule on Xiamen Airlines just to avoid this. I guess I could use my AA Plat, but I'm almost to 2million MQMs on Delta....