F9 2633 then DL 539 at Atlanta
Baltimore → Atlanta → Portland (Oregon)
Timetable, Atlanta time
09:09F9 2633 from Baltimore at the gate
08:20DL 539 to Portland (Oregon) leaves the gate
23 h 11 apart on the timetable, overnight
DL 539 leaves 23 h 11 after F9 2633 arrives on the timetable: more than half a day, so not a connection we count.