On the Beira Station, many moons ago, we only spoke to the comms SNCO, or, occasionally, the Sigs Officer. Mind you, the whole Ship's Company were well aware of LRMP presence, because we dropped them their mail and newspapers every second day.
However, I did get to speak to 'Charlie Oscar' once. That was the day when we dropped the mail container so close that the splash went up the side of his Frigate!