DL 514 then AA 3231 at Phoenix
Boston → Phoenix → Washington National
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
13:16AA 3231 to Washington National leaves the gate
15 h 23 apart on the timetable, overnight
AA 3231 leaves 15 h 23 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.