This is my own understanding, opinion, and experience. In ACIM, you are not a body. In Aikido, philosophically, the body is the visible part of the mind/spirit. So you are not your body. You are mind/spirit.
In Aikido, I remembered being conveyed the idea that in some martial arts, individual advancement is a significant goal. In Aikido though, it attempts to help everyone progress together. Aikido philosophically