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