OS 135 then FB 492 at Zurich
Vienna → Zurich → Sofia
Timetable, Zurich time
11:10OS 135 from Vienna at the gate
10:00FB 492 to Sofia leaves the gate
22 h 50 apart on the timetable, overnight
FB 492 leaves 22 h 50 after OS 135 arrives on the timetable: more than half a day, so not a connection we count.