One Concern interview questions

After agreeing to an interview, I spoke over Zoom with the recruiter who had reached out to me via email. We briefly reviewed my skills and discussed the company. Afterwards, I was offered an interview with their senior engineering manager. She reviewed my work experience more thoroughly, offering some questions to probe the technical decisions and consequences of some engineering products I helped to build. She also offered some general questions about big data architecture.

The process from the interview loop to finally deciding not to extend an offer took 3.5 months, though I was told midway that I'd be a great candidate. It's common practice to let people know within a couple of days whether you want to move forward with them or not. Prolonging this process to several months doesn't only reveal chaos and indecisiveness about who you are looking for. It is mostly frustrating and will turn future employees off. Very surprised to see such a strange application process happen in the current job market.