Based on the invocations in Chapter 22, what is the ultimate nature of the Sadguru in relation to form and formlessness?

The initial verses of Chapter 22 explore the profound and paradoxical nature of the Sadguru. It describes a state of 'total darkness' that existed before form or illusion, a formless state which is also the Sadguru. The chapter explains that the Sadguru is also the cause of the 'dim light' or illusion through which forms, like the mistaken snake, appear. Ultimately, the Sadguru's true nature is presented as being beyond duality, a 'nature devoid of being and non-being' so incomprehensible that even 'the Vedas became silent' in their attempts to describe it. This chapter portrays the Sadguru as the single source of both the unmanifest formless and the manifested world of illusion.