LX 563 then FB 492 at Zurich
Nice → Zurich → Sofia
Timetable, Zurich time
11:00LX 563 from Nice at the gate
10:00FB 492 to Sofia leaves the gate
23 h apart on the timetable, overnight
FB 492 leaves 23 h after LX 563 arrives on the timetable: more than half a day, so not a connection we count.