BOS Automotive Products interview questions

First feedback for the CV - we want to meet with you - then I waited 7 weeks to get interview date and invitation, interview with HR manager, Europe General Manager and Design Engineering Manager. Interview approx. 1 hour, mostly technical, general manager telling some corporate stuff about expanding Katowice team for about 40 more people. They told to expect feedback in 1, max two 2 week time. Feedback came after 3 weeks, position I applied was not filled, it was closed (team expansion haha). To sum up, 10 weeks lost for nothing.