AA 4078 then DL 560 at Seattle
Phoenix → Seattle → Atlanta
Timetable, Seattle time
10:43AA 4078 from Phoenix at the gate
23:40DL 560 to Atlanta leaves the gate
12 h 57 apart on the timetable
DL 560 leaves 12 h 57 after AA 4078 arrives on the timetable: more than half a day, so not a connection we count.