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