LY 4227 then AV 2036 at San Francisco
Boston → San Francisco → Seattle
Timetable, San Francisco time
13:51LY 4227 from Boston at the gate
07:25AV 2036 to Seattle leaves the gate
17 h 34 apart on the timetable, overnight
AV 2036 leaves 17 h 34 after LY 4227 arrives on the timetable: more than half a day, so not a connection we count.