DL 5175 then DL 3178 at Atlanta
Chattanooga → Atlanta → Gulfport
Timetable, Atlanta time
20:35DL 5175 from Chattanooga at the gate
20:20DL 3178 to Gulfport leaves the gate
23 h 45 apart on the timetable, overnight
DL 3178 leaves 23 h 45 after DL 5175 arrives on the timetable: more than half a day, so not a connection we count.