Must be the near constant use of mobiles, and sms, and the need to "keep in touch", that drives the co's chatting trivia away on company when they have line of sight. Thought they would get the hint indirectly with a few "get off the line there's a train coming", or the old "3 minutes- are you extending?" But no - they just looked blank, and no doubt thought I was an OLD FraT, while I was monitoring the other calls.