You might have me to thank for the eventual posting. I was in a similar situation, except that my first statement was closed on 3/19. I called Chase a couple of times and was always told to wait more. I finally secure messaged Chase. First the message was forwarded to the right department. Then I got a final reply this afternoon that they talked to United and get those miles posted. It went to my old Mileage Plus account number, which is not accessible by me from the website anymore. They found it and moved it to the new MP/old CO number. Maybe they looked at other accounts in the same situation and took care of them also.