IDEMIA Senior Software Engineer interview questions

I have attended the interview with IDEMIA and it is the worst interview in my 4 years of experience.They called only 10-15 person for the interview and I think in the interview panel there was only 2 or 3 person was available.I have cleared the 1st round technical at 11:00 AM and I waited 5 hours for the second round interview and then got the chance. And I think they were already selected one person who is the friend of the interviewer and they are only playing with us, fully waste of time.