UA 520 then AV 2036 at San Francisco
Burbank → San Francisco → Seattle
Timetable, San Francisco time
11:18UA 520 from Burbank at the gatealso AC 3286
07:25AV 2036 to Seattle leaves the gate
20 h 07 apart on the timetable, overnight
AV 2036 leaves 20 h 07 after UA 520 arrives on the timetable: more than half a day, so not a connection we count.