DL 514 then AA 1762 at Phoenix
Boston → Phoenix → Denver
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
17:26AA 1762 to Denver leaves the gate
19 h 33 apart on the timetable, overnight
AA 1762 leaves 19 h 33 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.