PY 994 then KL 1983 at Schiphol
Zandery → Amsterdam → Belgrade
Timetable, Amsterdam time
10:40PY 994 from Zandery at the gate
09:40KL 1983 to Belgrade leaves the gate
23 h apart on the timetable, overnight
KL 1983 leaves 23 h after PY 994 arrives on the timetable: more than half a day, so not a connection we count.