DL 514 then AA 3165 at Phoenix
Boston → Phoenix → Chicago O'Hare
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
13:12AA 3165 to Chicago O'Hare leaves the gate
15 h 19 apart on the timetable, overnight
AA 3165 leaves 15 h 19 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.