The teachings from the Course are non-dualistic teachings. If you return into historical China or back into India, you might have heard about Advaita Vedanta. Advaita actually implies “not two,” and that's a way of referring to the fact that there's a oneness which connects us all. ACOL alone acknowledges https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw