A3 629 then RO 274 at Athens
Luxembourg → Athens → Bucharest
Timetable, Athens time
21:55A3 629 from Luxembourg at the gate
19:20RO 274 to Bucharest leaves the gate
21 h 25 apart on the timetable, overnight
RO 274 leaves 21 h 25 after A3 629 arrives on the timetable: more than half a day, so not a connection we count.