DL 3155 then DL 5245 at Atlanta
Gulfport → Atlanta → Knoxville
Timetable, Atlanta time
08:55DL 3155 from Gulfport at the gate
08:11DL 5245 to Knoxville leaves the gate
23 h 16 apart on the timetable, overnight
DL 5245 leaves 23 h 16 after DL 3155 arrives on the timetable: more than half a day, so not a connection we count.