Can you explain the philosophical concept of non-duality as described in Chapter 35 in relation to experiencing Sai Baba?

Chapter 35 delves into the advanced philosophical concept of non-duality, explaining how the experience of Sai Baba transcends the normal separation between the observer and the observed. The text states that for the devotee, the "triad of the seen, the seer, and the seeing vanishes," erasing the sense of duality. This is not limited to sight. As Chapter 35 elaborates, this unity applies to all senses: in touch, Sai's light is felt in both places; in smell, Sai's residence is in both the nose and the scent. Even hearing a word can manifest Sai's form and cause the triad of "the heard, the hearer, and the hearing" to shatter, leading to a state of complete absorption in the divine.