Your experience of "interrogation school" (presumably as some part of law-enforcement job training?) sounds very positive and enlightened compared with the cliché depiction of aggressive leading questions we often see in films and TV. Unfortunately an encounter I once had with a drunk, off-duty police officer in the UK, who was absolutely determined to convince me I had committed an act of petty theft, and use that as grounds to start a physical fight, did suggest to me that his regular MO was much closer to the typical media portrayal of police interrogations as forcefully pursuing a conclusion that he had already leapt to without much evidence. I would like to think charitably that he was living out some "TV cop" fantasy in his spare time because he was forced to be so thorough and thoughtful in his everyday work; but I find that very hard to believe.
Off-duty cops are clueless, especially the drunk ones. A drug dealer friend once got a cop room mate for a couple years. That was hilarious and he would always pick us up if we were too drunk to drive, which we always made a fake scene about why a squad car was picking us up. Sometimes I miss my 20’s… nah, I don’t.
