What is revealed about Mr. Browning's character when he calls Jonathan Johnny Boy in section 5?

This question refers to the small text named "The Chess Game", written by Lindsey Rock.

It is revealed that Mr. Browning is lonely and misses his friend Wally. This connection is clearly made once Mr. Browning refers to Wally as Wally Boy and Ol' Wally Boy. By calling Jonathan Johnny Boy, he shows he misses his friend.