Delta is being penny-wise and pound foolish here: EU comp for a delay of this length is 600 Euros cash plus food.
DL also fought against the Passenger Bill of Rights for ground delays as well.
Mumbles Anderson used the DL house organ,
Whistling Dixie, to rail against it, as it could make airlines accountable to their customers, thus possibly reducing exec compensation.
Don't expect the
Big Global Airline that's
Got Your Back to spent a dollar more than is absolutely necessary to mitigate your inconvenience.
Y'all keep climbing.