WN 3497 then DL 1697 at Phoenix
Seattle → Phoenix → Boston
Timetable, Phoenix time
21:40WN 3497 from Seattle at the gate
14:20DL 1697 to Boston leaves the gate
16 h 40 apart on the timetable, overnight
DL 1697 leaves 16 h 40 after WN 3497 arrives on the timetable: more than half a day, so not a connection we count.