AM 21 then FR 2513 at Madrid
Mexico City → Madrid → Bucharest
Timetable, Madrid time
15:40AM 21 from Mexico City at the gate
14:30FR 2513 to Bucharest leaves the gate
22 h 50 apart on the timetable, overnight
FR 2513 leaves 22 h 50 after AM 21 arrives on the timetable: more than half a day, so not a connection we count.