FB 491 then LX 2174 at Zurich
Sofia → Zurich → Alicante
Timetable, Zurich time
15:40FB 491 from Sofia at the gate
10:05LX 2174 to Alicante leaves the gate
18 h 25 apart on the timetable, overnight
LX 2174 leaves 18 h 25 after FB 491 arrives on the timetable: more than half a day, so not a connection we count.