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