Flew B6 yesterday JFK-PHX for the first time since the new partnership. Overall, pretty happy as a platinum pro. Mosaic check-in desk, and no problems checking two bags for free over 50 pounds, due to our wine from Italy. Free extra legroom seats at check in on the app, and able to bring a carry-on with a blue basic fare, which was great. On board, cabins were new and refreshing compared to AA economy. Now just waiting for the miles to post.