BA 747 then UA 935 at Heathrow
Geneva → London → Los Angeles
Timetable, London time
21:25BA 747 from Geneva at the gate
15:20UA 935 to Los Angeles leaves the gate
17 h 55 apart on the timetable, overnight
UA 935 leaves 17 h 55 after BA 747 arrives on the timetable: more than half a day, so not a connection we count.