B9 9710 then J1 4872 at Istanbul
Tehran → Istanbul → GBT
Timetable, Istanbul time
12:15B9 9710 from Tehran at the gate
11:00J1 4872 to GBT leaves the gate
22 h 45 apart on the timetable, overnight
J1 4872 leaves 22 h 45 after B9 9710 arrives on the timetable: more than half a day, so not a connection we count.