Recruiter contacted me on LinkedIn to offer me the interview. I said I was interested and after an initial call, we arranged an interview with the hiring manager. Two days before the interview, she sent me an email and called me to give me some hints on what I should prepare. She insisted a lot on a few points. However all this was just a waste of time as the hiring manager did not ask anything about that, and there was no way to include any of the information I did some research about in the hiring manager's questions. I am glad that I did not pass this interview because I would not like to work with employees that just waste other people's time.