EW 2604 then EW 9603 at Lisbon
Stuttgart → Lisbon → Düsseldorf
Timetable, Lisbon time
16:45EW 2604 from Stuttgart at the gate
13:30EW 9603 to Düsseldorf leaves the gate
20 h 45 apart on the timetable, overnight
EW 9603 leaves 20 h 45 after EW 2604 arrives on the timetable: more than half a day, so not a connection we count.