Lightcast Discovery Physicist R D Engineer interview questions

Virtual interview. Had a panel of 3 people, one from Engineering/Product development, one with Biology/lab background and the COO. Got the interview through a recruiter. Was asked to prepare a presentation, and was asked technical questions based on that. I felt the COO was a bit rude because he turned off his camera halfway during the interview as though showing his lack of interest in continuing with the interview.