CV 251 then DL 1687 at O'Hare
Anchorage → Chicago → Atlanta
Timetable, Chicago time
19:00CV 251 from Anchorage at the gate
08:04DL 1687 to Atlanta leaves the gate
13 h 04 apart on the timetable, overnight
DL 1687 leaves 13 h 04 after CV 251 arrives on the timetable: more than half a day, so not a connection we count.