Rohde & Schwarz .NET Developer interview questions

I have applied online and I was recruited after a month, for a spontaneous interview. It was with a HR, a Product Owner, and Project Manager. No technical people were involved. There were various basic questions about my technical experience and personality. They asked me if I have front end knowledge. Since I am a full-stack dev, of course I have, and then I've asked what exactly they are looking for. I did not get what they were specifically looking for.