FR 5204 then FR 506 at Dublin
Sofia → Dublin → Bristol
Timetable, Dublin time
00:55FR 5204 from Sofia at the gate
15:00FR 506 to Bristol leaves the gate
14 h 05 apart on the timetable
FR 506 leaves 14 h 05 after FR 5204 arrives on the timetable: more than half a day, so not a connection we count.