Roche Project Manager interview questions

Two phone interviews, one with a current PM, the second with the hiring manager. Both asked reasonable questions, wanted to know my background and experience. Had to wait 4 weeks between phone interview and in person interview. Met with variety of employees that I'd be working with, the hiring manager struggled with decision to hire me because I did not have any official PM experience but have PM skills. Waited another 3 weeks to hear the decision, kept checking in with HR, kept being referred to as a "top candidate".