Without a doubt slow Aet work would adapt anyone to that setting. But it would beg the question, that those of us who aren’t expedition climbing and only need to be in shape for one big alpine day once in a while, perhaps less Aet and more high intensity would make us quicker in those settings?
No. Once an event is over two hours, then the same rules apply. I wouldn’t have supra-AeT training exceed 5% of total training minutes per year.