Saint-Gobain interview questions

I went to a Career Fair that my university hosted, Impressed the host of the table for Saint Gobain. They asked to interview with me the following day. Met them at an career center for my university. I met with an HR Rep and recently hired engineer who was an alumnist from my college.

Position came to my attention through a contracting company. The interview went well (almost two good) in that both sides were excited about what we could all bring to the table. It seemed rather easy. No hard questions. In retrospect meeting my teammates should have been the red flag. The supervisor did not speak highly of the team and before I met them, I was asked to not ask specific questions, as they were probably concerned for their jobs. Should have, could have, would have.