There were 5 interviews in total (from the below to the highest boss). I made it to the penultimate level and the 4 stages were quite intense (critical thinking and problem solving questions asked). The time taken for the 4 stages of interviews to take place was short and they actively and positively seek me out to ensure I had not proceed with any other offers. But when they decided to not proceed with me after the 4th stage, they did not provide me any response / result / feedback from the 4th interview at all. I had to contact them to find out. The treatment was completely different after the 4th interviewer decided that my characters and visions clashed with his (in other words, they cold storage the candidates they no longer want).