AA 4456 then DL 154 at Boston
Indianapolis → Boston → Dublin
Timetable, Boston time
10:18AA 4456 from Indianapolis at the gate
22:45DL 154 to Dublin leaves the gate
12 h 27 apart on the timetable
DL 154 leaves 12 h 27 after AA 4456 arrives on the timetable: more than half a day, so not a connection we count.