W4 3173 then FR 4273 at Madrid
Bucharest → Madrid → Tirana
Timetable, Madrid time
17:50W4 3173 from Bucharest at the gate
13:40FR 4273 to Tirana leaves the gate
19 h 50 apart on the timetable, overnight
FR 4273 leaves 19 h 50 after W4 3173 arrives on the timetable: more than half a day, so not a connection we count.