DL 2990 then DL 5508 at Atlanta
Jacksonville → Atlanta → Tri-Cities
Timetable, Atlanta time
17:23DL 2990 from Jacksonville at the gate
17:20DL 5508 to Tri-Cities leaves the gate
23 h 57 apart on the timetable, overnight
DL 5508 leaves 23 h 57 after DL 2990 arrives on the timetable: more than half a day, so not a connection we count.