DL 977 then AV 2036 at San Francisco
Boston → San Francisco → Seattle
Timetable, San Francisco time
11:41DL 977 from Boston at the gate
07:25AV 2036 to Seattle leaves the gate
19 h 44 apart on the timetable, overnight
AV 2036 leaves 19 h 44 after DL 977 arrives on the timetable: more than half a day, so not a connection we count.