WN 1470 then DL 1697 at Phoenix
Nashville → Phoenix → Boston
Timetable, Phoenix time
20:05WN 1470 from Nashville at the gate
14:20DL 1697 to Boston leaves the gate
18 h 15 apart on the timetable, overnight
DL 1697 leaves 18 h 15 after WN 1470 arrives on the timetable: more than half a day, so not a connection we count.