It was a telephone interview with an HR lady based in Germany headquarters. I was mistaken with the time when she sent me an email arranging based on "CET" so I was not expecting the call by the time I got it. I then had to ask the lady to call me back after 10 minutes and had the interview in my tutor's office. the interview went well, was all typical competency questions. I still haven't heard back from the company yet and I am a bit worried they are going to turn me down because I was not careful with the time.