Frankly, these kind of questions drive me nuts. Why play a convention that leads to these questions? Is it not clear that the 2H bid is a reverse showing 16+? Is it not clear that the 2H bid shows stoppers in Clubs and hearts? Does not N have 10+ points and a Diamond stopper? Why is not his simplest least complicated most informative action to not just add the 10 he has to the 16 partner has shown and bid 3NT? No confusion, no disaster, best contract reached. Bippity boppity BOO!!