WN 1759 then DL 1697 at Phoenix
Denver → Phoenix → Boston
Timetable, Phoenix time
20:15WN 1759 from Denver at the gate
14:20DL 1697 to Boston leaves the gate
18 h 05 apart on the timetable, overnight
DL 1697 leaves 18 h 05 after WN 1759 arrives on the timetable: more than half a day, so not a connection we count.