TK 229 then JU 423 at Istanbul
Yanbu → Istanbul → Belgrade
Timetable, Istanbul time
17:05TK 229 from Yanbu at the gate
16:40JU 423 to Belgrade leaves the gate
23 h 35 apart on the timetable, overnight
JU 423 leaves 23 h 35 after TK 229 arrives on the timetable: more than half a day, so not a connection we count.