The teachings on the Course are non-dualistic teachings. When you go back into historical China or again into India, you would've heard of Advaita Vedanta. Advaita essentially implies “not two,” and that's a method of referring to The actual fact that there is a oneness which connects us all. ACOL https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw