How does the Satcharita define birth and death, and why are these concepts considered irrelevant for a Yogi like Sai Samarth?

Chapter 43 provides a clear definition: 'The union of body and senses is birth; the separation of body and senses is death.' However, it immediately frames these as irrelevant for a Yogi of Sai Samarth's stature. For him, they are 'false imaginations.' The text explains that as the Supreme Brahman, he is devoid of bodily impulses and can incarnate at will. He is described as one who can 'place their feet on the head of Time.' For such a being, death is like 'dust before him.' His departure was not a death in the conventional sense but a yogic act of merging with the unmanifest, a state he could achieve at will.