I once had eyes rolled at me by one of the interview committee members over a response I gave. I didn't think I had a bad response to that question, but like many, I was nervous. I really just wanted to get up and walk out...but coasted through the rest on the interview.
Very unprofessional and cold. I might have even rejected an offer if that occurred.
...as far as 1, and being at a several campuses in my career, I have filled many applications and never got any contact. Used to it. Especially knowing the # of applicants.