WN 3481 then DL 1697 at Phoenix
Pittsburgh → Phoenix → Boston
Timetable, Phoenix time
21:20WN 3481 from Pittsburgh at the gate
14:20DL 1697 to Boston leaves the gate
17 h apart on the timetable, overnight
DL 1697 leaves 17 h after WN 3481 arrives on the timetable: more than half a day, so not a connection we count.