Some people say that after the chi reaches the head-top, it returns to the tan-t’ien down the front of the body, in a kind of circulation. I do experience an odd kind of circulation, but the connection between the head-top and the tan-tien is not so direct for me.
Oftentimes we think of our consciousness as continuous. Gautama the Buddha said that in fact, consciousness only takes place as the result of contact between a sense organ and sense object, and has no real continuity. I would say that Gautama’s explanation probably had a lot to due with his experience of proprioception (consciousness generated by particular muscle or ligamentous tissues, concerning the placement and orientation of those tissues relative to the body as a whole).