FR 2437 then W4 3826 at Madrid
Rome → Madrid → Sibiu
Timetable, Madrid time
18:00FR 2437 from Rome at the gate
09:25W4 3826 to Sibiu leaves the gate
15 h 25 apart on the timetable, overnight
W4 3826 leaves 15 h 25 after FR 2437 arrives on the timetable: more than half a day, so not a connection we count.