UA 737 then AV 2352 at San Francisco
Seattle → San Francisco → Burbank
Timetable, San Francisco time
12:59UA 737 from Seattle at the gatealso EK 6489
08:40AV 2352 to Burbank leaves the gate
19 h 41 apart on the timetable, overnight
AV 2352 leaves 19 h 41 after UA 737 arrives on the timetable: more than half a day, so not a connection we count.