Build rapport, go off record, look them straight in the eye and ask them (and in a quiet tone of voice to emphasize confidentiality) If they trust you they’ll

Build rapport, go off record, look them straight in the eye and ask them (and in a quiet tone of voice to emphasize confidentiality) If they trust you they’ll tell you. If they don’t they won’t. Now you can decide based off of that if you want to pursue employment. This is the best and easiest way I’ve gotten people to tell me things they weren’t allowed to.