Does epistemological primacy equate to ontological primacy? That is, does the fact that consciousness is the most immediate and foundational basis of knowledge mean that consciousness creates reality? That's what's discussed in this clip.
The full 90 minute interview is available with a subscription to Sam Harris's Making Sense podcast at https://samharris.org/. That will give you access to all of his full length conversations. This one is from the Waking Up series and is called The Nature of Awareness.