DL 3968 then AA 767 at Seattle
Vancouver → Seattle → Dallas-Fort Worth
Timetable, Seattle time
16:53DL 3968 from Vancouver at the gate
12:47AA 767 to Dallas-Fort Worth leaves the gate
19 h 54 apart on the timetable, overnight
AA 767 leaves 19 h 54 after DL 3968 arrives on the timetable: more than half a day, so not a connection we count.