WN 427 then DL 514 at Phoenix
Nashville → Phoenix → Boston
Timetable, Phoenix time
07:35WN 427 from Nashville at the gate
23:23DL 514 to Boston leaves the gate
15 h 48 apart on the timetable
DL 514 leaves 15 h 48 after WN 427 arrives on the timetable: more than half a day, so not a connection we count.