DL 514 then AA 1614 at Phoenix
Boston → Phoenix → Chicago O'Hare
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
17:18AA 1614 to Chicago O'Hare leaves the gate
19 h 25 apart on the timetable, overnight
AA 1614 leaves 19 h 25 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.