DL 677 then DL 5519 at Atlanta
Las Vegas → Atlanta → Tri-Cities
Timetable, Atlanta time
13:54DL 677 from Las Vegas at the gate
13:45DL 5519 to Tri-Cities leaves the gate
23 h 51 apart on the timetable, overnight
DL 5519 leaves 23 h 51 after DL 677 arrives on the timetable: more than half a day, so not a connection we count.