in the book one flew over the cockoo's nest, what chapter does mcmurphy become friends with doctor spivey?

Part I, Chapter 9. This is the chapter in which McMurphy and the Doctor have a meeting through during which they discover they share many things. They went to the same high school and enjoyed the same carnivals as youths; they talk about things they both carry as happy memories, and because of this form a bond if not a real friendship. Doctor Spivey gains new respect for McMurphy, and in turn takes many of his ideas to heart.