UA 900 then AV 2352 at San Francisco
London → San Francisco → Burbank
Timetable, San Francisco time
13:20UA 900 from London at the gatealso LX 3042, AC 5375, OS 7857, SN 9099, LH 9374, NZ 9831
08:40AV 2352 to Burbank leaves the gate
19 h 20 apart on the timetable, overnight
AV 2352 leaves 19 h 20 after UA 900 arrives on the timetable: more than half a day, so not a connection we count.