Can you explain the concept of non-duality as experienced by a devotee of Sai Baba, where the senses perceive only him?

Chapter 35 of the Shri Sai Satcharitra poetically describes a state of non-dualistic devotion. In this state, a devotee's experience of the world is completely pervaded by Sai Baba. For example, a single glance from Baba eliminates hunger and thirst. The text explains that the "triad of the seen, the seer, and the seeing vanishes," erasing all sense of duality. This experience extends to all senses: Sai's light is in the sense of touch, his residence is in scent, and his form manifests when a word is heard. This complete absorption in Sai dissolves the distinction between the subject, object, and the act of perception, ultimately leading to a state of non-action (Naishkarmya).