Ask them the same question: "What whould you ask a product manager in a job interview?" Andvanced version: "Create and describe some case, puzzle, exam that yo

Ask them the same question: "What whould you ask a product manager in a job interview?" Andvanced version: "Create and describe some case, puzzle, exam that you whould give your future product manager on the interview" This will give you a good perspective of how he sees himself as a product and rich soil for open discussions.