Have been in the industry and technology for 20+ years, this was by far the worst candidate experience I've ever had. Whomever the CPO/Head of Recruitment is, you need to spend time to figure out what isn't working and fix that because there are a lot of people looking for work but you let the managers and staff down by doing a very poor job.
Timeline
Applied: September 9th
First interview: September 17th
Second Interview: September 24th
Third Interview: October 3rd
Forth Interview: October 4th
Fifth Interview: October 24th
Last point of feedback: November 18th (after saying I was not really interested any more, and recruiter saw I had picked up a new job)
You make the industry look very bad and uncoordinated. Additionally if you have follow up questions, don't have the recruiter, after 5 weeks of waiting, ask if you (the candidate) are still interested, then follow up with bad feedback to make me the bad guy, right after saying 'all the interviews went well, we're in a holding pattern'. To add insult to injury one of your 'hiring committee' leaked the other candidates name to which I asked him how he felt things are going, and he was more confused about the entire thing than I was, and he wanted to pass on you too!
Note - I was also a referral, and he felt so embarrassed that I genuinely felt bad for him saying its ok, the team was who let us both down.