Acsel Health interview questions

First round was a behavioural with the hiring manager. Second round was a written life sciences case with questions on the solution. Third round was another case with a consultant. Final round was a virtual super day with a coffee chat, a case, presentation prep (~30 mins), presentation, behavioural with CEO, and another case. I felt I did well on the cases and okay on the presentation, but the CEO was very tough in his questioning. He asked a lot about different concepts in the US health insurance market (which I admit, I was not super familiar with as a non-US citizen who prepped for more pharma concept questions), as well as culture/fit questions. Everyone I met was very nice and welcoming except for the CEO. The hiring manager called me the next day rejecting me and offering me feedback on my interview, which was appreciated.