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