I would suggest it's neither -- the closing Action resolves the narrative so it doesn't need to drive any further decisions.
And though there might be a previous decision related to the closing Action, the closing Action isn't driven by that decision. For example in Star Wars, the rebels deciding to attack the Death Star with small fighters puts Luke in the right area, but it doesn't force or guarantee that's he's going to get in position and make that final shot.
Similarly, although his decision to Trust the Force and switch off his targeting computer etc. is certainly related at the storytelling level to the final Action (and in a very compelling way), it doesn't force the success of that shot. (Another way to put it: in Star Wars the closing Driver isn't just taking the shot, it's making the shot -- which isn't something you can just decide.)
As far as I know there's no set relationship. I think you tie them together at the storytelling level. The MC Unique Ability might be helpful in relating them, but I don't think anything in particular is required.