DL 3968 then AS 412 at Seattle
Vancouver → Seattle → Pittsburgh
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
12:49AS 412 to Pittsburgh leaves the gate
19 h 56 apart on the timetable, overnight
AS 412 leaves 19 h 56 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.