DL 441 then DL 3507 at Atlanta
Dallas → Atlanta → Shreveport
Timetable, Atlanta time
13:28DL 441 from Dallas at the gate
11:00DL 3507 to Shreveport leaves the gate
21 h 32 apart on the timetable, overnight
DL 3507 leaves 21 h 32 after DL 441 arrives on the timetable: more than half a day, so not a connection we count.