Congrats! ?
I also got interview invitation from UA. In fact I had two different interviews with POIs and one of them was this morning. First one lasted for 20 mins, and second one over an hour. (They didn't say it was "interview" but "conversation" though...) Today I was asked to ask her questions and she said she wanted to give information as much as she can to help me make "big decision." I'd like to hear how your interview went, and I hope the best for both of us!