FR 7153 then FR 120 at Dublin
Santander → Dublin → London Gatwick
Timetable, Dublin time
10:40FR 7153 from Santander at the gate
07:50FR 120 to London Gatwick leaves the gate
21 h 10 apart on the timetable, overnight
FR 120 leaves 21 h 10 after FR 7153 arrives on the timetable: more than half a day, so not a connection we count.