FR 1644 then EW 755 at Vienna
Rome → Vienna → Cologne
Timetable, Vienna time
21:30FR 1644 from Rome at the gate
15:35EW 755 to Cologne leaves the gate
18 h 05 apart on the timetable, overnight
EW 755 leaves 18 h 05 after FR 1644 arrives on the timetable: more than half a day, so not a connection we count.