The teachings in the Course are non-dualistic teachings. For those who go back into historical China or again into India, you would have heard about Advaita Vedanta. Advaita basically usually means “not two,” and that's a technique for discussing The very fact that there's a oneness which connects us all. https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw