DL 1223 then DL 1397 at Atlanta
Cincinnati → Atlanta → Austin
Timetable, Atlanta time
16:33DL 1223 from Cincinnati at the gate
14:11DL 1397 to Austin leaves the gate
21 h 38 apart on the timetable, overnight
DL 1397 leaves 21 h 38 after DL 1223 arrives on the timetable: more than half a day, so not a connection we count.