WN 1801 then AA 3216 at Atlanta
Denver → Atlanta → Philadelphia
Timetable, Atlanta time
18:35WN 1801 from Denver at the gate
18:29AA 3216 to Philadelphia leaves the gate
23 h 54 apart on the timetable, overnight
AA 3216 leaves 23 h 54 after WN 1801 arrives on the timetable: more than half a day, so not a connection we count.