DL 2899 then DL 3507 at Atlanta
Austin → Atlanta → Shreveport
Timetable, Atlanta time
11:28DL 2899 from Austin at the gate
11:00DL 3507 to Shreveport leaves the gate
23 h 32 apart on the timetable, overnight
DL 3507 leaves 23 h 32 after DL 2899 arrives on the timetable: more than half a day, so not a connection we count.