Qualcomm Senior IT/Network Engineer interview questions

Qualcomm has a fairly stringent interview process. Should you make it past the initial screen of being chosen from the large pool of applicants, you are then asked for a phone interview. Following this point, there are multiple on-site interviews. My interview started off with the two staff members giving an overview of the company, the actual questions were fairly brief (10-15mins) and then I was asked if I had any questions, for which I went fairly in depth and talked for another 15 mins until their conference room time ended. I felt the interview went great and received a similar feeling from the interviewers, however several days later I received a form letter from recruiting stating they were not moving forward with me as a candidate. I was a little taken aback by this, as I felt the interview went very well and thought I would get the chance to 'prove myself' further in the in-person panels. Upon emailing the interviewers asking for feedback on what may have went wrong during our phone interview so that I could better myself for further opportunities, I received no response back....which was a little disappointing. I feel that this is one of those companies where you really do need to know somebody on the inside to get a direct hire, or start off with their internship program, which at this point in my career is not a feasible option.