F9 4765 then DL 1697 at Phoenix
Denver → Phoenix → Boston
Timetable, Phoenix time
20:54F9 4765 from Denver at the gate
14:20DL 1697 to Boston leaves the gate
17 h 26 apart on the timetable, overnight
DL 1697 leaves 17 h 26 after F9 4765 arrives on the timetable: more than half a day, so not a connection we count.