The very first advice for Interview panel. Seems to be panel was reading the interview questions from MAC machines and expecting the same answer. Panel was really unable to judge the candidates. All expected questions only. But panel need to update UI is not simple thing. It is vast topic. Try to analyze the logic, what the candidates say. I think panel never involved in integrating process at all. But the HR is team seems to be good. Well scheduled interview and didn't made us to wait .