FR 4546 then FR 5718 at Barcelona
Porto → Barcelona → Bratislava
Timetable, Barcelona time
20:40FR 4546 from Porto at the gate
09:30FR 5718 to Bratislava leaves the gate
12 h 50 apart on the timetable, overnight
FR 5718 leaves 12 h 50 after FR 4546 arrives on the timetable: more than half a day, so not a connection we count.