The teachings of the Course are non-dualistic teachings. Should you go back into historic China or again into India, you would have heard of Advaita Vedanta. Advaita essentially indicates “not two,” and that's a strategy for talking about The very fact that there is a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw