AS 414 then DL 554 at Seattle
Austin → Seattle → Atlanta
Timetable, Seattle time
20:33AS 414 from Austin at the gate
12:00DL 554 to Atlanta leaves the gate
15 h 27 apart on the timetable, overnight
DL 554 leaves 15 h 27 after AS 414 arrives on the timetable: more than half a day, so not a connection we count.