You are mistaken, there would have been two pilots for landing (and take-off come to that).
The division of duties between pilots are roughly thus:
"Pilot Flying" flies the aircraft-either hand-flying or through the autopilot.
"Pilot non-flying" handles communications.
There are some "variations on a theme", but the above is basically "industry standard".
Hope this clears up any confusion you may have over what actually happens during a flight.