I guess the question I have now is, are narrative, dissociated and adiegetic mechanics the same. Is there anything that is one of these things but not another?
Well, it is pretty clear that we aren't all using the same lexicon. But, for me...
Narrative and diegetic/adiegetic are orthogonal. Specifically, not all adiegetic mechanics are narrative ones.
I haven't yet seen why I'd want to determine if disassociated mechanics are all adiegetic, so I don't have a position.