According to Chapter 11, why is it important for a devotee to have a Guru in a physical, manifest form?

Chapter 11 strongly advocates for the importance of a Guru in a physical form, especially for a devotee who also has a physical body. The text argues that without meditating on a manifest (Saguna) form, true devotion cannot manifest. A physical Guru provides a tangible focus for worship: a form that can be seen with the eyes, whose feet one can bow to, and with whom one can exchange words of love. This form can be worshipped with offerings like sandalwood and grains, making the path of devotion more accessible and practical, which ultimately leads to the realization of the formless Supreme Brahman.