DL 514 then AA 2449 at Phoenix
Boston → Phoenix → Philadelphia
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
16:32AA 2449 to Philadelphia leaves the gate
18 h 39 apart on the timetable, overnight
AA 2449 leaves 18 h 39 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.