DL 514 then WN 757 at Phoenix
Boston → Phoenix → Denver
Timetable, Phoenix time
21:53DL 514 from Boston at the gate
14:30WN 757 to Denver leaves the gate
16 h 37 apart on the timetable, overnight
WN 757 leaves 16 h 37 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.