FBI interviewers didn't think he lied, but Mueller twisted something to get that outcome. Mueller's MO is to get you to say something on record then bring in someone to contradict you. The contradiction is held up as gospel truth, your statement is categorized as false, and you're threatened with prison time if you don't help with what they're really after. Someone not used to such hardball tactics, feeling the full weight of the Federal government, having their savings and home go up in smoke, would most likely fold to stop the bleeding. According to FBI interviewers Flynn was happy to sit down with them, felt he had nothing to hide. I doubt he had representation there. This is your government in action when they want something. Have you forgotten Janet Reno, Waco, and Ruby Ridge?