How does Chapter 6 explain the concept of non-duality (Advaita) and Sai Baba's manifestation as other deities?

Chapter 6 of the Sai Satcharitra delves into the profound spiritual concept of non-duality, or Advaita. It explains that the Sadguru, Sai Baba, facilitates this realization by awakening the sense of 'Soham' ('I am He') within the devotee. This awakening dissolves the illusion of a separate self, the sense of 'me and mine,' and reveals the innate bliss of unity with the divine. The chapter further illustrates this principle by describing how Sai Baba transcends His physical form. It states that when a devotee reads scriptures like the Puranas or listens to the Bhagavat, Sai Himself appears in the form of Rama or Krishna, making the devotee feel as if they are hearing His own life story, thus showing all forms are one.