A3 961 then A3 868 at Athens
Bucharest → Athens → Krakow
Timetable, Athens time
11:50A3 961 from Bucharest at the gate
11:00A3 868 to Krakow leaves the gate
23 h 10 apart on the timetable, overnight
A3 868 leaves 23 h 10 after A3 961 arrives on the timetable: more than half a day, so not a connection we count.