AS 485 then DL 438 at Seattle
Burbank → Seattle → Boston
Timetable, Seattle time
13:24AS 485 from Burbank at the gate
11:45DL 438 to Boston leaves the gate
22 h 21 apart on the timetable, overnight
DL 438 leaves 22 h 21 after AS 485 arrives on the timetable: more than half a day, so not a connection we count.