It establishes the lack of connection between Akakiy and his colleagues. This is the contribution the narrator's description makes.
Akaky Akakievich , the main character from a tale by Nikola Gogol, is bound to have a mediocre life. He leads a boring life. He has no interests and he only cares about his copy work. At work , he does not pay any attention to the other clerks, who make fun of him because of his strange personality.