Not for delay, but if lost yes
I don't see the difference, Dan needs the stuff NOW
BH I have no experience,was working off stories I heard from friends etc.
I thought it was common practice, even for non DDFers, to go on a returnable shopping spree as soon as bags are lost.
Regarding orgin, it's very possible that the traveler packed expensive items that he or she needs urgently, even in home in the bag (like Dans crib, or maybe his nice shabbos suit). If the airline is responsible, shouldn't make a dif, smdestor orgin