What is the philosophical understanding of death presented in the context of Sai Baba's mahasamadhi?

According to the teachings in Chapter 43, death is fundamentally misunderstood. It is described as the "separation of body and senses," an inseparable counterpart to birth. However, for enlightened beings like Sai Baba, these are "false imaginations." The text posits that death is the nature of the body, even a state of happiness for it, while life is merely a modification. Sai Samarth, being the Supreme Brahman, is beyond such concepts. His departure was not a death but a willful act, as he "could die at will" and "merged himself into the unmanifest." For saints, death is likened to a solar eclipse—a mere defect of vision for the observer, not a change in the sun's true nature. He remains unbroken and fills the world.