How does Chapter 21 describe the connection between different Saints, even if they live in different times or places?

Chapter 21 explains that Saints, despite appearing in different locations and eras for specific purposes, are fundamentally one and inseparable. The text states that though their country, time, and physical forms may differ, the signs of one Saint are completely known by another, and "inwardly, they are all one." An analogy is provided to clarify this concept: just as a sovereign king establishes outposts with appointed officers to manage his kingdom, the "Emperor of Self-bliss" (referring to the divine principle) appears in various forms like Sai Baba, invisibly pulling the strings and driving the chariot of His spiritual kingdom. This illustrates their secret, unified arrangement.