Originally Posted by
Often1
Although not relevant to OP's question, the rebooking responsibility here was UA's as the late-delivering carrier. Given that EWR is a UA hub, it would likely have been more fruitful to have been rerouted by UA via anu number of European destinations and then onward to DUS, hopefully arriving a good deal earlier than 24 hours late.
Most of the UA flights depart fairly early in the evening, after that it's LH show.