Meta Product Manager interview questions

I have been through an HR screening and product manager interview. Here is how it went: HR phone screening was very informative. HR was responsive and very helpful. Following HR screening, I was scheduled to have a phone interview with a product manager. PM called me 10 minutes late, apologizing that he was not sure if the interview was confirmed or not. He said that he didn't have a chance to review my background. Well, ok... And then he ended the interview in 25 minutes (it was scheduled to be 45 minutes), of which half of the time was spent in regular meet-greet-intro-questions. HR decided not to proceed further in the process. The feedback was that the interviewer had hoped to get more on product vision. I have been interviewing, hiring and building teams for years now and I am not really sure how anyone can assess one's product vision in a 25-minute phone interview. I found the overall experience very unprofessional and somehow disrespectful to the candidate (well to me…). I spent days prepping for the interview, reading even the Facebook developer documents to familiarize myself with the offerings of the company that I may not be aware of. So I expected a little more than a late-starting 25-minute opportunity.