From an absolute standpoint, there is of course only exchange of heat, no work. Also, there can be no "systems" at work in describing an initial state pre Big Bang. There can only be one, or we have not answered one single question.
So how does these laws play out before system a can interact with system b?
Q-mind holds that the one system is functionally two and that "interaction" is instead "intra-action".
It is Self Generating, speed/gravity producing energy of alternate currency. No worker is added beside the one human mind invents to make sense of what happens in terms of causality.