WN 1458 then DL 514 at Phoenix
Dallas → Phoenix → Boston
Timetable, Phoenix time
07:45WN 1458 from Dallas at the gate
23:23DL 514 to Boston leaves the gate
15 h 38 apart on the timetable
DL 514 leaves 15 h 38 after WN 1458 arrives on the timetable: more than half a day, so not a connection we count.