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