DL 706 then AA 4800 at Atlanta
Denver → Atlanta → Washington National
Timetable, Atlanta time
17:48DL 706 from Denver at the gate
17:01AA 4800 to Washington National leaves the gate
23 h 13 apart on the timetable, overnight
AA 4800 leaves 23 h 13 after DL 706 arrives on the timetable: more than half a day, so not a connection we count.