W9 5776 then U2 8447 at Gatwick
Prague → London → Nantes
Timetable, London time
19:30W9 5776 from Prague at the gate
18:35U2 8447 to Nantes leaves the gate
23 h 05 apart on the timetable, overnight
U2 8447 leaves 23 h 05 after W9 5776 arrives on the timetable: more than half a day, so not a connection we count.