JU 536 then GQ 680 at Athens
Belgrade → Athens → Sofia
Timetable, Athens time
03:25JU 536 from Belgrade at the gate
18:00GQ 680 to Sofia leaves the gate
14 h 35 apart on the timetable
GQ 680 leaves 14 h 35 after JU 536 arrives on the timetable: more than half a day, so not a connection we count.