According to Chapter 10, how did Sai Baba's sleeping arrangements demonstrate his divine powers?

Chapter 10 describes Sai Baba's extraordinary sleeping habits, which defied ordinary understanding and showcased his divine nature. He would sleep on a narrow wooden plank, merely four cubits long and one span wide, which was suspended from the rafters by old rags. This chapter explains that the plank, which seemed incapable of supporting a person's weight, was merely for name’s sake, as Baba possessed Great Siddhis (powers). His movements were imperceptible, as the text notes that no one ever saw when he climbed up to or descended from this precarious swing, illustrating his subtle and superhuman abilities.