Foothill Regional Medical Center interview questions

Was put in a room with 20 other new grad RNs and 3 interviewers. We had to raise our hands for a chance to answer questions for 3 hours. I raised my hand for maybe 15 questions and was only called on twice. There was an icebreaker at the beginning and during my turn the interviewer rolled her eyes at me. It was also labeled as a hiring event which I feel is misleading.