Does chapter 29 mention any other great saints by name, like Gajanan Maharaj?

No, Chapter 29 of the Shri Sai Satcharita does not mention any other specific saints by name, such as Gajanan Maharaj. The chapter's narrative focuses exclusively on the divine play and characteristics of Sai Baba. While verse 8 refers to him as "the Maharaj" in a general sense, acknowledging his generous and righteous disposition, this is a title of respect for Sai Baba himself. The text details the arrival of devotees from Madras and begins a story about a girl named Amani, all in the context of illustrating Sai Baba's fame, compassion, and inscrutable wisdom. There are no references to other contemporary or historical saints within these passages from Chapter 29.