AA 580 then DL 3855 at Seattle
Charlotte → Seattle → Eugene
Timetable, Seattle time
10:03AA 580 from Charlotte at the gate
22:44DL 3855 to Eugene leaves the gate
12 h 41 apart on the timetable
DL 3855 leaves 12 h 41 after AA 580 arrives on the timetable: more than half a day, so not a connection we count.