FR 667 then FR 1948 at Dublin
Birmingham (UK) → Dublin → Luxembourg
Timetable, Dublin time
14:55FR 667 from Birmingham (UK) at the gate
12:30FR 1948 to Luxembourg leaves the gate
21 h 35 apart on the timetable, overnight
FR 1948 leaves 21 h 35 after FR 667 arrives on the timetable: more than half a day, so not a connection we count.