Meta Senior Engineering Manager interview questions

I was contacted by Facebook recruiter via Linkedin. After few discussions about skills and roles, I had a 30 minute call with one of their directors. Afterwards there was silence for several months. It seems the role was no longer relevant. After few months the same recruiter contacted me with a new role. Again a 30 minute call with a senior guy. It seems I passed that and the actual interview process started. There were 6 calls of 45 minutes each. Each of them covered a different area (e.g. design, coding, project retrospective). After completing all 6 rounds, I was told to wait for few weeks to get final result. That result never came. I followed up with the recruiting team and came to know that the responsible recruiter left. Another person was requested to provide the feedback to me. Even after asking the person again after a week, I have never received the result. This is quite unprofessional and inappropriate after spending hours in the process, which overall spread over almost 1 year.

The process was professional, but there were lengthy gaps between stages, very likely due to COVID. Due to those delays other opportunities had presented themselves and I withdrew from the process.