DL 420 then AA 982 at O'Hare
Savannah → Chicago → Pittsburgh
Timetable, Chicago time
13:13DL 420 from Savannah at the gate
12:31AA 982 to Pittsburgh leaves the gate
23 h 18 apart on the timetable, overnight
AA 982 leaves 23 h 18 after DL 420 arrives on the timetable: more than half a day, so not a connection we count.