EC 7174 then FR 4545 at Barcelona
Berlin → Barcelona → Porto
Timetable, Barcelona time
13:30EC 7174 from Berlin at the gate
06:45FR 4545 to Porto leaves the gate
17 h 15 apart on the timetable, overnight
FR 4545 leaves 17 h 15 after EC 7174 arrives on the timetable: more than half a day, so not a connection we count.