Based on Chapter 46, what is the nature of Sai Baba's presence and how does he interact with his followers?

Chapter 46 portrays Sai Baba's presence as subtle and often invisible, yet profoundly active. It explains that even though his form is not visible, the spirit in his Samadhi is awake and provides experiences for devotees. The chapter uses the metaphor of Sai holding a "subtle string" to pull his devotees towards him, whether they are near or in foreign lands, just as a mother nourishes her child. It's stated that Sai Baba is always near his devotees, wherever they may go, and can give them unexpected visions. Despite orchestrating all events, he is described as flying the "flag of detachment" and calling himself a non-doer, making his true character incomprehensible.