DL 1697 then DL 1624 at Boston
Phoenix → Boston → Chicago O'Hare
Timetable, Boston time
21:00DL 1697 from Phoenix at the gate
13:35DL 1624 to Chicago O'Hare leaves the gate
16 h 35 apart on the timetable, overnight
DL 1624 leaves 16 h 35 after DL 1697 arrives on the timetable: more than half a day, so not a connection we count.