...excuse me? I think someone's a fibbing in the writing department. Over the years we've entertained in our homes members of the governing body, other "heavies" as they're called, CO's, DO's, regular Bethelites, etc., we did some temporary work in the clinics. Yet I can't ever remember a rousing discussion in those social settings where the "Kingdom" played a principal role. Sometimes there were spiritual discussions but not the "common theme" for sure.
I don't imagine the apostles spent every waking minute talk about Jesus, and I don't think that's what's expected.