AS 365 then DL 438 at Seattle
Dallas-Fort Worth → Seattle → Boston
Timetable, Seattle time
12:07AS 365 from Dallas-Fort Worth at the gate
11:45DL 438 to Boston leaves the gate
23 h 38 apart on the timetable, overnight
DL 438 leaves 23 h 38 after AS 365 arrives on the timetable: more than half a day, so not a connection we count.