Like so many things on a spiritual journey, we can experience our body in a vast range of ways.
Most people experience their physical body and have an internal experience of thoughts and emotions.
Some come to experience energy fields and auras, learning to see or feel them. Some notice their mind is like a field surrounding the entire body. And so forth.
This leads to descriptions of 5 koshas, sheaths, or “bodies”; the food (physical), emotional, mental, intellect, and causal.
Different traditions speak of the cosmic body in various ways. The son of God, for example. Or Narayana, the firstborn.
Perhaps at first we recognize there is a cosmic body, then that it is our cosmic body, then that I am that, then that there is only the cosmic body.
With Brahman stage, we come to recognize simultaneous realities where there are distinct perspectives that are simultaneously true. We are cosmic in body and physical too. These are not separate perspectives but part of one totality.
Still deeper, we can come to recognize there is a Divine body, a body made of Divinity. Then that we are that. Then that can rise right to the surface. It is Divine even to the sense of touch, for example.
From the perspective of being the cosmic body or being the Divine body, there are no koshas. The apparent physical body is just an appearance of the universal body, even right on the surface.
And yet this doesn’t exclude the experience of our physical senses and of having a physical body. Nor does it exclude the perspective of the koshas. It is all experienced to be only cosmic or only Divine.
One body known many, many ways.