One of the best CO's I remember actually wryly said from the platform to be kind to new ones with children coming along as they weren't used to long meetings especially nowadays. (this was in the late 1990's) He actually said when he was a young man in his twenties coming along he came to hear about everlasting life and that when he sat in a watchtower study for the first time he actually had a foretaste of everlasting life as it seemed so long and boring it was never-ending!
He then said I only have 30 minute ones now (as a CO visit doesn't get the paras read) but my wife has to put up with me giving the same talk for six months at a time poor love!
Actually he was probably our last (only?) really good CO ...