DL 5614 then AA 857 at Boston
Milwaukee → Boston → Philadelphia
Timetable, Boston time
17:53DL 5614 from Milwaukee at the gate
16:59AA 857 to Philadelphia leaves the gate
23 h 06 apart on the timetable, overnight
AA 857 leaves 23 h 06 after DL 5614 arrives on the timetable: more than half a day, so not a connection we count.