UA 930 then BA 746 at Heathrow
San Francisco → London → Geneva
Timetable, London time
11:15UA 930 from San Francisco at the gate
10:30BA 746 to Geneva leaves the gate
23 h 15 apart on the timetable, overnight
BA 746 leaves 23 h 15 after UA 930 arrives on the timetable: more than half a day, so not a connection we count.