DL 3968 then AS 648 at Seattle
Vancouver → Seattle → Tucson
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
08:58AS 648 to Tucson leaves the gate
16 h 05 apart on the timetable, overnight
AS 648 leaves 16 h 05 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.