DE 4323 then FR 2507 at Barcelona
Frankfurt am Main → Barcelona → Cologne
Timetable, Barcelona time
09:30DE 4323 from Frankfurt am Main at the gate
06:20FR 2507 to Cologne leaves the gate
20 h 50 apart on the timetable, overnight
FR 2507 leaves 20 h 50 after DE 4323 arrives on the timetable: more than half a day, so not a connection we count.