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