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