WN 255 then DL 1697 at Phoenix
San Diego → Phoenix → Boston
Timetable, Phoenix time
19:30WN 255 from San Diego at the gate
14:20DL 1697 to Boston leaves the gate
18 h 50 apart on the timetable, overnight
DL 1697 leaves 18 h 50 after WN 255 arrives on the timetable: more than half a day, so not a connection we count.