Mach9 Robotics interview questions

My interviewer was changed last minute and so I wasnt able to prepare on time about the interview. The interview process felt more like asking in depth and detialed questions to whatever answers I have. It also looked like they weren't trying to get to know me or my experience they were asking question on work environment, ideal setting and so on. Also I got ghosted and did not get any email that I was rejected even though I tried multiple times reaching out.