FB 491 then LX 1370 at Zurich
Sofia → Zurich → Krakow
Timetable, Zurich time
15:40FB 491 from Sofia at the gate
12:10LX 1370 to Krakow leaves the gate
20 h 30 apart on the timetable, overnight
LX 1370 leaves 20 h 30 after FB 491 arrives on the timetable: more than half a day, so not a connection we count.