They took too long and asked for too many steps. I had the feeling they were disorganized and not sure of what they wanted to do.
First meeting: Two weeks to call me for a first interview with HR. Refused to tell me the salary range.
Second interview: CSM team manager. The interviewer kept looking around distracted and yawning. Great feedback, was promised to have an answer soon.
Third interview: another two weeks. Two interviewers, one was a manager and the other a higher level role. Very informal, easy-going, but was surprised with a language test I was not prepared for. Yet, great feedback, another promise to hear back from them soon.
Fourth interview: Another two weeks to reply. A panel composed by three people. I was asked to do a presentation for a business case that was quite complex and required professional experience - and they were asking this for an Associate / Junior position.
Ended up accepting another job offer and contacted them apologizing and thanking them for their time. Never heard back from them. A "thank you & good luck" would have been the minimum, I think.