Belvedere Trading Software Engineer interview questions

I applied online and was sent an email to do a coding challenge. The coding challenge was 3 questions. first question you are given 15 minutes, second question 45 minutes, and third 90 minutes. Third question was hard because I never took Data Structures yet.

Asked me to do a coding challenge online, not recorded. There were three questions and I got two of them correct. I was denied the first round interview opportunity. Since they were recruiting at my university, I knew most of the other candidates. The candidates who were giving first round opportunities only got one or two of the coding challenges correct like me, so they must've not like my programming structure.