Good one, Christian guy! It sounds almost like a long KH 'this-is-how-to-do-it' demo. I liked the way you explained how the kingdom isn't just a government (a stock JW definition repeated without thinking - when you actually DO think about it, it's a 'duh' moment - the JW definition of 'Babylon the Great' is another one).
It's amazing that they allowed you to follow through with your argument to the punchline without diversions or a speedy exit. How old were these guys? Did they give the impression they'd been JWs a while (experienced), or had status in the congregation?