Based on Chapter 43, what is the true nature of Sai Baba that makes him impervious to the concepts of birth and death?

Chapter 43 describes Sai Baba not as a mere mortal but as the "complete Supreme Brahman" and a "mass of bliss." Because of this true nature, the text posits that the entire world is an illusion from his perspective, and therefore he lacks body-consciousness. For the Supreme Brahman, questions of birth and death are meaningless. His actions in the world, such as holding or releasing his breath or moving in an invisible form, are described as a "spontaneous play of Yoga" performed for the salvation of his devotees. The text compares the idea of death for a saint to an eclipse, which is merely a defect of vision and not a change in the sun's true state.