WN 496 then DL 514 at Phoenix
Denver → Phoenix → Boston
Timetable, Phoenix time
10:55WN 496 from Denver at the gate
23:23DL 514 to Boston leaves the gate
12 h 28 apart on the timetable
DL 514 leaves 12 h 28 after WN 496 arrives on the timetable: more than half a day, so not a connection we count.