This was the worst interview experince, not becuase the interviewers were bad. But because after 5 rounds, case study etc. I was ghosted. First round was HR, then hiring manager, then hiring manger's peers, then her boss and then the head of Insights from USA. I did 2 interviews while on holiday in another country as they said it was urgent. All went well except that after final round, no one ever contacted me or responded to my several emails. Later I heard the insights manager left the company a month later, but I think this highly unprofessional.