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