How does the author in Chapter 18 describe the relationship between a speaker and an attentive listener, and how does this relate to the Guru's grace?

Chapter 18 highlights the dynamic relationship between a speaker and a listener, stating that when the listener is attentive, the speaker feels enthusiasm and respect, causing a 'spring of love' to overflow in their heart, filling both with joy. The author then connects this to the Guru's grace, promising to narrate a sweet tale of grace bestowed upon them. The chapter also compares the Guru to 'the rain clouds of the monsoon, showering the water of self-bliss with love,' implying that the Guru's teachings, like a speaker's story, are a form of grace that nourishes the attentive devotee, or listener.