DL 662 then DL 5519 at Atlanta
Portland (Oregon) → Atlanta → Tri-Cities
Timetable, Atlanta time
14:15DL 662 from Portland (Oregon) at the gate
13:45DL 5519 to Tri-Cities leaves the gate
23 h 30 apart on the timetable, overnight
DL 5519 leaves 23 h 30 after DL 662 arrives on the timetable: more than half a day, so not a connection we count.