W4 3171 then FR 2436 at Madrid
Bucharest → Madrid → Rome
Timetable, Madrid time
09:45W4 3171 from Bucharest at the gate
09:35FR 2436 to Rome leaves the gate
23 h 50 apart on the timetable, overnight
FR 2436 leaves 23 h 50 after W4 3171 arrives on the timetable: more than half a day, so not a connection we count.