AS 2204 then DL 438 at Seattle
San Luis Obispo → Seattle → Boston
Timetable, Seattle time
12:35AS 2204 from San Luis Obispo at the gate
11:45DL 438 to Boston leaves the gate
23 h 10 apart on the timetable, overnight
DL 438 leaves 23 h 10 after AS 2204 arrives on the timetable: more than half a day, so not a connection we count.