EI will also struggle with onward connectivity from a daylight NYC/BOS-DUB. EI, in the main, does not overnight aircraft at European destinations. As it stands the last flights of the night are to UK destinations, before 20:00, but when the daylight JFK ran it arrived in DUB at 23:30, so far too late for any connections.
With the arrival of 7 A321LR's, Im sure a daytime flight will be back, its an O&D route only though. The westbound leave too early for connections into Dublin, the eastbound arrive too late for connections from Dublin.