DL 926 then DL 1507 at Atlanta
Washington National → Atlanta → Tri-Cities
Timetable, Atlanta time
12:09DL 926 from Washington National at the gate
12:06DL 1507 to Tri-Cities leaves the gate
23 h 57 apart on the timetable, overnight
DL 1507 leaves 23 h 57 after DL 926 arrives on the timetable: more than half a day, so not a connection we count.