Multiple rounds. Screening interview by recruiter then hiring manager. Then panel interview with 4-6 people. Then presentation of case study (which had been sent a week in advance) with opportunity for interviewers to do a Q&A. Position was level 6/7.

Got a call from a recruiter, passed the screening then moved on to speak with the hiring manager. The conversation went well and I was scheduled to speak with another member on the team - that's when things went dark. For two weeks I didn't hear anything from the recruiter who was facilitating the interview, no response to any of my followup emails. To this day I still don't know what happened. Well, guess I was simply ghosted.