Philips Research and Development interview questions

I contacted the HR woman by email and we had a short talk, basically about my research at the university, followed by a few questions. After the talk she said that she will set up another interview with one of the project leaders. It has been silent for about two weeks and then I got the schedule of the next interview. This time I got a phone call from a researcher, we talked for about half an hour about my recent paper and the projects that they were running. Three weeks later they sent me an email telling that I was not selected for the position.