UA 124 then TK 1848 at Athens
Newark → Athens → Istanbul
Timetable, Athens time
10:05UA 124 from Newark at the gate
06:55TK 1848 to Istanbul leaves the gate
20 h 50 apart on the timetable, overnight
TK 1848 leaves 20 h 50 after UA 124 arrives on the timetable: more than half a day, so not a connection we count.