DL 514 then AA 357 at Phoenix
Boston → Phoenix → Philadelphia
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
15:45AA 357 to Philadelphia leaves the gate
17 h 52 apart on the timetable, overnight
AA 357 leaves 17 h 52 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.