U2 6841 then EW 7765 at Zurich
Porto → Zurich → Hamburg
Timetable, Zurich time
20:40U2 6841 from Porto at the gate
20:15EW 7765 to Hamburg leaves the gate
23 h 35 apart on the timetable, overnight
EW 7765 leaves 23 h 35 after U2 6841 arrives on the timetable: more than half a day, so not a connection we count.