Pluralsight Senior Software Engineer interview questions

Pathetic interview process. PluralSight is in really bad shape as of now. The HR who processed my profile got laid off during the interview process. The interview process was pretty straightforward. First introductory call with the HR and then two technical rounds. If you clear both the rounds then you will have a final hiring manager round. I cleared the two technical rounds and then the HR got fired. He before getting fired, scheduled the third round with the hiring manager for 45mins. During the third round, the hiring manager didn't ask any significant questions. He only asked me to introduce myself and gave his introduction. And then asked why did you switch from your previous companies. I gave the answers and the reasons. He was totally dull during the round and was talking as if he couldn't sleep from past 2days. After all this the round got completed in just 20mins. No other questions were asked. And then abruptly he said, I am done from my side.... HR will get back you. I didn't receive any feedback for days and then I called the HR, only to know that he himself has been fired. He gave me a number of his colleague and asked me to talk to him. I contacted the colleague but he said that he is not having any clear feedback from the hiring manager but it is a NO. I told him about the round and he agreed that it is weird that how come in just 2 introductory questions and in 20mins the round was completed. He even told that my feedback from the previous two rounds was positive and team was happy with my skills and knowledge. He told that he will get the clear feedback and get in touch with the hiring manager, as the hiring manager went on leave for a week and is not well. And after more than 20days, I don't have the clear feedback. To be honest it felt as if the hiring manager already had shortlisted someone but since I had cleared the rounds he was forced to take the interview. Pathetic process and unprofessional experience overall.