Formless awareness is empty as it is no longer a thing, it can then imitate that, that is deeper than form, the unmanifest innermost of being. In that imitation there is a merging, awareness and unknowing become one.
Awareness aware of what it first knows remains formless with thought and form, thus merging with the outer. It is in this merging that one can truly experience from reality into reality. From as is, into what is.