DL 2646 then DL 154 at Boston
Chicago O'Hare → Boston → Dublin
Timetable, Boston time
22:53DL 2646 from Chicago O'Hare at the gate
22:45DL 154 to Dublin leaves the gate
23 h 52 apart on the timetable, overnight
DL 154 leaves 23 h 52 after DL 2646 arrives on the timetable: more than half a day, so not a connection we count.