EI 3351 then FR 343 at Dublin
Newcastle → Dublin → London Gatwick
Timetable, Dublin time
09:55EI 3351 from Newcastle at the gate
09:10FR 343 to London Gatwick leaves the gate
23 h 15 apart on the timetable, overnight
FR 343 leaves 23 h 15 after EI 3351 arrives on the timetable: more than half a day, so not a connection we count.