GQ 681 then SN 3246 at Athens
Sofia → Athens → Brussels
Timetable, Athens time
21:55GQ 681 from Sofia at the gate
16:00SN 3246 to Brussels leaves the gate
18 h 05 apart on the timetable, overnight
SN 3246 leaves 18 h 05 after GQ 681 arrives on the timetable: more than half a day, so not a connection we count.