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