The teachings with the Course are non-dualistic teachings. If you return into historical China or again into India, you would've heard about Advaita Vedanta. Advaita in fact signifies “not two,” and that is a method of speaking about The very fact that there is a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw