How does Chapter 27 describe the relationship between a Guru's joy and a devotee's spiritual journey?

Chapter 27 portrays a deeply interconnected relationship between the Guru's joy and the devotee's spiritual state. The text explicitly states, 'In whatever constitutes the devotee's own happiness, the Guru finds supreme joy.' This joy intensifies as the devotee progresses spiritually. The chapter clarifies this by adding, 'as the devotee turns more towards the spiritual path, the Guru feels more wonder.' This shows that the Guru's happiness is not derived from material offerings but from witnessing the devotee's awakening and their turning away from the 'momentary Maya' of worldly attachments through singular devotion, a key teaching found in Chapter 27.