How does Chapter 6 describe the Sadguru's role in helping a devotee achieve non-duality or Advaita?

In Chapter 6, the Sadguru's role in guiding a devotee towards non-duality (Advaita) is detailed as a deep spiritual process. The text explains that the Sadguru awakens the intrinsic sense of 'I am He' (Soham) within the devotee, revealing their innate bliss. By doing this, He helps dissolve the illusion of a separate self, the sense of 'me and mine,' right in His presence. As Chapter 6 poetically states, the Guru manifests the harmony of non-duality, leading the devotee to experience supreme bliss and unity with the divine by washing away the impurities of many births.