AS 414 then DL 3748 at Seattle
Austin → Seattle → Vancouver
Timetable, Seattle time
20:33AS 414 from Austin at the gate
13:32DL 3748 to Vancouver leaves the gate
16 h 59 apart on the timetable, overnight
DL 3748 leaves 16 h 59 after AS 414 arrives on the timetable: more than half a day, so not a connection we count.