Had a preliminary screening with HR, which went fine, then an interview with the hiring manager, which was not fine. The hiring manager seemed pleasant and engaged when we started the video call - she started off talking for a few minutes about herself and what she was trying to accomplish for the department. Then she asked her first question - and almost immediately turned off. Literally within the first minute of my talking, you could see her disengaging. I have no idea what it was that made her disconnect - I'd barely had a chance to say anything yet, so I can't imagine it was anything I said. Maybe she just didn't like my accent or the sound of my voice? She spent the rest of the interview not really engaging with anything I was saying, and some of the time didn't appear to be listening. For example, she asked a question about my experience with something (call it A). I talked for a few minutes about my experience with A, and also discussed my experience with B, which naturally ties into A. Her response? "Okay. And what's your experience with B?" So I wasn't surprised when I wasn't invited back, although I was annoyed that they ghosted me and didn't have the common decency to send me an email letting me know.