Qualcomm Hardware interview questions

Had applied for Summer 2020 Hardware Intern position. Was called to interview for Bluetooth validation team. Was emailed to schedule a video interview. We agreed on interview a week later. There was a panel of 3 men for the video interview. During the video interview, I was just given two small problems to solve. One was a bit-manipulation problem and other was to fill-up a Bluetooth protocol message sequence diagram (tey explained protocol before asking me to solve). As the interview started with some audio/video glitches, they didn't ask any further technical questions. Then they explained me what the position is about and that it involves mainly hardware integration and validation tests requiring using test equipment and scripting. The level of questions very simple and which I believe I did answer correctly. However, they still decided to not give an offer which was bizarre.

I submitted resume on campus career fair and then online. After about 3 weeks I took 2 interviews from different teams. Questions are closely related to the job I applied to. After about 4 weeks comes the result.