Capital One Data Engineer interview questions

My favorite interview/interviewers so far. I was contacted by HR first who talked to me on a phone for about half an hour to do initial screening. Then, he sent me a link to Codesignal task. I finished it within 2 weeks. Latter, I was contacted by the same HR person who offered a time slot for Power interview (2 technical, 1 behavioral and 1 case study). After the power day I was promptly contacted by the same HR person who let me know that I was not selected, and gave me a feedback ( which I kind of anticipated in my head already), that the interviewers liked this and that my skills, but they considered that my case study solution was weak.

This interview process was convoluted and not well organized. I met with 6 people over 3 weeks and was still not contacted regarding my application after 2 more weeks. I was frustrated by the amount of material I was asked about multiple times.