DL 1708 then DL 1507 at Atlanta
Huntsville → Atlanta → Tri-Cities
Timetable, Atlanta time
12:00DL 1708 from Huntsville at the gate
11:59DL 1507 to Tri-Cities leaves the gate
23 h 59 apart on the timetable, overnight
DL 1507 leaves 23 h 59 after DL 1708 arrives on the timetable: more than half a day, so not a connection we count.