DL 5614 then B6 2459 at Boston
Milwaukee → Boston → Philadelphia
Timetable, Boston time
16:32DL 5614 from Milwaukee at the gate
15:33B6 2459 to Philadelphia leaves the gate
23 h 01 apart on the timetable, overnight
B6 2459 leaves 23 h 01 after DL 5614 arrives on the timetable: more than half a day, so not a connection we count.