DL 1223 then DL 2104 at Atlanta
Cincinnati → Atlanta → Austin
Timetable, Atlanta time
16:30DL 1223 from Cincinnati at the gate
12:20DL 2104 to Austin leaves the gate
19 h 50 apart on the timetable, overnight
DL 2104 leaves 19 h 50 after DL 1223 arrives on the timetable: more than half a day, so not a connection we count.