FR 815 then FR 1456 at Dublin
Edinburgh → Dublin → Brussels
Timetable, Dublin time
20:25FR 815 from Edinburgh at the gate
12:15FR 1456 to Brussels leaves the gate
15 h 50 apart on the timetable, overnight
FR 1456 leaves 15 h 50 after FR 815 arrives on the timetable: more than half a day, so not a connection we count.