LX 569 then FB 492 at Zurich
Nice → Zurich → Sofia
Timetable, Zurich time
16:05LX 569 from Nice at the gate
10:00FB 492 to Sofia leaves the gate
17 h 55 apart on the timetable, overnight
FB 492 leaves 17 h 55 after LX 569 arrives on the timetable: more than half a day, so not a connection we count.