Can you explain the concepts of 'shaktipat' and the dissolution of duality as presented in the opening of Chapter 40?

The beginning of Chapter 40 describes Shri Sai Samarth's ability to bestow profound spiritual grace. It states that when Sai places His hand upon a devotee's head, He performs 'shaktipat,' which is the direct transmission of spiritual energy. This powerful act makes the unattainable attainable by destroying the sense of duality. The chapter elaborates on this by explaining that it dissolves the separate feelings of "me" and "you." For those who offer a full prostration and seek exclusive refuge, Sai embraces them in His heart, removing the distinction between the individual and the Guru.