What are the main topics covered in Chapter 43 regarding Sai Baba's final days and passing?

Chapter 43 serves as a continuation of the narrative of Sai Baba's passing, aiming to complete the story from the previous chapter. According to the text, it outlines several key events, including how Sai listened to the Ramayana before his death, the planning for his Samadhi (tomb), and the significant incident of the 'fall of the brick'. Chapter 43 also promises to recount a past event where Baba appeared to have left his body for three days before suddenly returning, which startled his devotees, and it reflects on his transition to an unmanifest, omnipresent state.