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