AV 2347 then BA 284 at San Francisco
Burbank → San Francisco → London
Timetable, San Francisco time
17:50AV 2347 from Burbank at the gate
17:25BA 284 to London leaves the gatealso IB 3625, AS 5278, AY 5524, AA 6995, EI 8984
23 h 35 apart on the timetable, overnight
BA 284 leaves 23 h 35 after AV 2347 arrives on the timetable: more than half a day, so not a connection we count.