DL 2856 then DL 1507 at Atlanta
Detroit → Atlanta → Tri-Cities
Timetable, Atlanta time
12:36DL 2856 from Detroit at the gate
11:59DL 1507 to Tri-Cities leaves the gate
23 h 23 apart on the timetable, overnight
DL 1507 leaves 23 h 23 after DL 2856 arrives on the timetable: more than half a day, so not a connection we count.