Based on Chapter 43, what specific events related to Sai Baba's Mahasamadhi are detailed in this section of the Satcharitra?

Chapter 43 of the Shri Sai Satcharitra provides a concise review and a preview of several significant events related to Sai Baba's final days and his Mahasamadhi. The chapter mentions that a full explanation was previously given about the prediction of his departure made through Tatya Ba and the donation made to Lakshmi. It then states that this chapter will narrate how, as death drew near, Sai listened to the Ramayana. Furthermore, Chapter 43 explains that it will detail how the planning for the Samadhi (tomb) occurred and the related unseen incident known as the 'fall of the brick'.