Can you explain the concept of non-duality and the vanishing of the triad as described in the experience of Sai's presence?

Chapter 35 describes a profound spiritual experience where the presence of Sai Baba leads to the dissolution of duality. When a devotee has a vision of Sai, the distinction between 'the seen' (Sai), 'the seer' (the devotee), and 'the seeing' (the act of vision) vanishes. This shattering of the triad is not limited to sight; it extends to other senses. For instance, when a word is heard, Sai's form manifests, and the separation between the heard, the hearer, and the hearing collapses. This principle applies to touch and smell as well, indicating that Sai's light and residence permeate all sensory experiences, erasing the place of duality.