Hilarious. I don't know why I am compelled to try to respond to this (or many of these). bit -
>>> There were no other characters/actors I'm aware of. The surroundings (no people in town) and only these 2 characters gave a special meaning to this movie.
If it's a western and its in color, it might well be Monte Hellman's THE SHOOTING. Only four actors (including Jack Nicholson and Warrem Oates) play five characters. Oates and his two companions are following his twin brother, Nicholson is following those three for half the movie. Takes place in a desert wasteland. The movie is definitely full of "special meaning", however.