The idea of "ownership of a body" made me think about a quote I heard a long time ago, while talking amongst musicians while waiting to get up and perform. It felt like some secret knowledge that I gained privilege to, while somewhat inebriated and it hasn't left me since.
> I _have_ a body, I _am_ a soul.
Maybe what they're identifying is the first half of that statement, how we interpret the former, through the presence of the latter.
Dualism is almost always unhelpful as a model. Your soul is a process your body runs, they are indistinguishable.
You can do that with mental phenomenon too - eg, having memories, feelings, consciousness, thoughts. All aspects of "I" that might be present or not - so they can't really be said to be you as much as possessed by you for a moment. Insofar as a soul exists for you to be ... it is quite small.