In chapter 8 two thing reinforce the theme of invisibility. What are they

The narrator feels like he does not exist in New York. There are so many people and he does not have any friends. There is nothing familiar to him in the city, except for a Bible in his room. When searching for a job, the narrator feels invisible to employers. A secretary tells the narrator that Mr. Bates is not in the office. The narrator suspects that Mr. Bates is there but prefers not to see him.