The teachings from the Course are non-dualistic teachings. If you go back into ancient China or again into India, you would have heard about Advaita Vedanta. Advaita truly implies “not two,” and that's a means of speaking about The very fact that there is a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw