MathWorks User Experience Designer interview questions

The interview process is very demanding. They also gave a design exercise, did multiple rounds with different members of the team TWICE! However their rejection process was the most disappointing. I was ghosted by them and after a grueling 3 week effort and around 8 rounds of interviews and presentations, putting in work which looked better than their native product, I had to check their system to know that I was rejected, even though they had informed me that they would reach out to me via email. Further they ghosted me for any feedback. It was a complete waste of time and bit unethical.