The text says saints don't really die. What does this mean? How is a saint's 'death' different from an ordinary person's?

According to the philosophy presented in Chapter 43, the death of a saint like Sai Baba is fundamentally different from that of an ordinary person. For most, death is the separation of the body and senses. However, for a saint who has conquered death and is one with the Supreme Brahman, this concept is a 'false imagination.' Chapter 43 explains that death for saints is like a solar eclipse—a defect of vision for the observer, not a reality for the saint themselves. Sai Samarth's departure was a willed act where he consciously 'burned the body in the fire of Yoga' and merged into his unmanifest form. He is described as being beyond bodily impulses, so the physical event of death has no hold over him, making it a state of happiness rather than an end.