DL 5619 then B6 159 at Boston
Milwaukee → Boston → Philadelphia
Timetable, Boston time
22:02DL 5619 from Milwaukee at the gate
19:00B6 159 to Philadelphia leaves the gate
20 h 58 apart on the timetable, overnight
B6 159 leaves 20 h 58 after DL 5619 arrives on the timetable: more than half a day, so not a connection we count.