BA 510 then EW 2605 at Lisbon
London Heathrow → Lisbon → Stuttgart
Timetable, Lisbon time
17:55BA 510 from London Heathrow at the gate
10:10EW 2605 to Stuttgart leaves the gate
16 h 15 apart on the timetable, overnight
EW 2605 leaves 16 h 15 after BA 510 arrives on the timetable: more than half a day, so not a connection we count.