A3 999 then LX 1823 at Athens
Istanbul → Athens → Geneva
Timetable, Athens time
07:00A3 999 from Istanbul at the gate
20:00LX 1823 to Geneva leaves the gate
13 h apart on the timetable
LX 1823 leaves 13 h after A3 999 arrives on the timetable: more than half a day, so not a connection we count.