WN 3494 then DL 1697 at Phoenix
Pittsburgh → Phoenix → Boston
Timetable, Phoenix time
20:30WN 3494 from Pittsburgh at the gate
14:20DL 1697 to Boston leaves the gate
17 h 50 apart on the timetable, overnight
DL 1697 leaves 17 h 50 after WN 3494 arrives on the timetable: more than half a day, so not a connection we count.