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