i think as dan said, it would depend on who i was playing with. we sometimes will practice spinning hands in the sort of parallel stance, but i think the goal is different, and posture would be different as well. like for us, we try to stay away from the open sternum posture, since it's "past the limit", according to tai chi principles (as they relate to the body).
that's not meant to be a dig at anukai stuff, since i don't know what they're working on here (it's always tough to comment on other arts).
Well no, tactics aside, I meant are you willing and able to replicate / film Akuzawa's setup and then provide your analysis of it? You've put one video out there, but as Dan says, there are many ways to do something like that, not all of which are 'internal'
If there was a 'standardized' thing to look it, it might make comparisons and discussions easier. Not that the pushout is the end all and be all, but it does seem to be a handy 'default' that most are familiar with.