Catalyze Group interview questions

Very long process: applied online, then was asked to submit a video descibring my motivation, then had a 1h-call with HR about the company and with questions about my experience. At the end of the call, it was suggested to me there were other candidates further in the interviewing process that they had preference for. Three weeks later HR offered another call, similar to the first one but touching on salary expectations and even commuting costs. A week later an interview was planned. The interview was with the company director and the team leader, and included a client case to discuss. Had I passed, there'd still be another interview with business cases.