BA 349 then VL 909 at Heathrow
Nice → London → Frankfurt am Main
Timetable, London time
21:05BA 349 from Nice at the gate
15:30VL 909 to Frankfurt am Main leaves the gate
18 h 25 apart on the timetable, overnight
VL 909 leaves 18 h 25 after BA 349 arrives on the timetable: more than half a day, so not a connection we count.