Fluor Fire Sprinkler Designer interview questions

It took over a month for Fluor to schedule an interview after my recruiter contacted them. The interview was with three people and they grilled me really good however I knew the answers to everyone of their questions. Unfortunately one of the people asking the most of the seemed a detested that I knew the answers to his questions. I’m guessing he was the manager or head designer there. I guess I should have purposely missed some of the questions to make that guy happy. Anyway, I wouldn’t suggest applying to Fluor because of this and also because they ghosted me after the interview; even after I email each of them individually a month afterwards to see if they had any more questions about me.