Adyen Software engeener interview questions

Interview process contain a few steps. first I had a video call with the recruiter, then I needed to complete a HackerRank assessment contains 5 questions related to SQL, data-structure and concurrency in 180 min which looks unfair! then I had another interview with 2 senior developer from Adyen to review my solution in HackerRank. at the end I had an interview with a team lead in the company in person. It was a standard interview process but It took about 2 months and after each step I had to chase the recruiter to get an update every time. all the interviews went well but in last interview I had a feeling that maybe they don't need any more developer. It was just waste of time. the project is also legacy. at the end I received a typical rejection email without any info! just don't waste your time on this company.