I believe that with the cessation of the final moment of consciousness in one body, the stream of consciousness flows into a new body conditioned by both mind and matter.
Consciousness might be an example of something with no matter. Many posit that consciousness is primary and matter is a creation of consciousness. But what that consciousness actually is, is beyond our conception. One famous scientist said 'we can not get behind consciousness'.
The latter is true without a doubt. How can knowing and theorising take place without consciousness pre existing?
In the former, what or who is theorising? The stream of consciousness in a vessel called Von Bek or the vessel itself?