DL 4654 then DL 1199 at Atlanta
Knoxville → Atlanta → Chicago O'Hare
Timetable, Atlanta time
09:44DL 4654 from Knoxville at the gate
22:40DL 1199 to Chicago O'Hare leaves the gate
12 h 56 apart on the timetable
DL 1199 leaves 12 h 56 after DL 4654 arrives on the timetable: more than half a day, so not a connection we count.