According to Chapter 11, why is devotion to a Guru in a physical (Saguna) form considered important for a spiritual seeker?

Chapter 11 of the Shri Sai Satcharitra explains that devotion to a Guru in a physical, or Saguna, form is essential for a devotee who also possesses a physical body. The text argues that without meditating on this manifest form, true devotion cannot blossom, and the mind remains closed. It is through the tangible presence of a Guru that a devotee can express love, place their head at their feet, and receive knowledge. The chapter posits that understanding the Saguna is a much easier and more direct path for most people. Once love for the Saguna form is firmly established, the realization of the formless, or Nirguna, naturally follows.