How does Chapter 20 explain Sai Baba's divine nature and the significance of his physical presence?

In Chapter 20, Sai Baba is described as being originally formless but having taken on a physical form for the benefit of his devotees, likening his role to an actress named "Maya" who plays her part perfectly. His presence in Shirdi is portrayed as a "Siddhashram," an abode of the perfected, where the mere sight of him relieves the fatigue of worldly life. The chapter suggests that even though those times are past, one can still experience his presence and drive away delusion by bringing him into focused meditation, beholding him from toe to face.