DL 3968 then AS 549 at Seattle
Vancouver → Seattle → Dallas-Fort Worth
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
12:19AS 549 to Dallas-Fort Worth leaves the gate
19 h 26 apart on the timetable, overnight
AS 549 leaves 19 h 26 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.