DL 1697 then DL 5603 at Boston
Phoenix → Boston → Madison
Timetable, Boston time
21:00DL 1697 from Phoenix at the gate
13:10DL 5603 to Madison leaves the gate
16 h 10 apart on the timetable, overnight
DL 5603 leaves 16 h 10 after DL 1697 arrives on the timetable: more than half a day, so not a connection we count.