How does Chapter 27 philosophically link devotion to a physical Guru with the worship of the formless Supreme Brahman?

Chapter 27 masterfully bridges the concepts of devotion to the manifest Guru and the worship of the abstract Supreme Brahman. It opens with the profound statement, 'Holding firmly to the feet of the Sadguru brings about the bowing to the Trinity of Brahma and others; it is the salutation to the Supreme Brahman itself, the manifest embodiment of self-bliss.' As explained in Chapter 27, the Guru is not seen as a mere teacher but as the physical incarnation of the formless divine. Therefore, devotion to the Guru is the most direct and accessible means of worshipping the Supreme Brahman. The text reinforces this by stating that taking a dip in the 'ocean' of the Guru's grace provides the merit of all pilgrimages, positioning the Sadguru as the ultimate and all-encompassing spiritual reality.