FR 803 then BA 695 at Vienna
Valencia → Vienna → London Heathrow
Timetable, Vienna time
21:45FR 803 from Valencia at the gate
14:50BA 695 to London Heathrow leaves the gate
17 h 05 apart on the timetable, overnight
BA 695 leaves 17 h 05 after FR 803 arrives on the timetable: more than half a day, so not a connection we count.