AA 4460 then DL 1397 at Atlanta
New York LaGuardia → Atlanta → Austin
Timetable, Atlanta time
14:19AA 4460 from New York LaGuardia at the gate
14:11DL 1397 to Austin leaves the gate
23 h 52 apart on the timetable, overnight
DL 1397 leaves 23 h 52 after AA 4460 arrives on the timetable: more than half a day, so not a connection we count.