So if I understand right, tokamak reactors create the conditions for fusion to happen continually, whereas the z-pinch method creates the conditions for fusion to happen momentarily, and the fusion-fission combination method uses the z-pinch method to both generate heat and hurl neutrons at a mass of thorium (or any other material that won't go critical) to cause fission and generate additional heat.

I guess the thing that makes Z-FFR a fusion-based energy generation method is that fusion is a convenient way to get neutrons up to fission speed?