DL 1668 then DL 1081 at Atlanta
Indianapolis → Atlanta → Austin
Timetable, Atlanta time
22:00DL 1668 from Indianapolis at the gate
20:35DL 1081 to Austin leaves the gate
22 h 35 apart on the timetable, overnight
DL 1081 leaves 22 h 35 after DL 1668 arrives on the timetable: more than half a day, so not a connection we count.