FR 10 then IB 725 at Madrid
Dublin → Madrid → London Heathrow
Timetable, Madrid time
23:55FR 10 from Dublin at the gate
17:20IB 725 to London Heathrow leaves the gatealso LA 1704, VY 5180, BA 7058
17 h 25 apart on the timetable, overnight
IB 725 leaves 17 h 25 after FR 10 arrives on the timetable: more than half a day, so not a connection we count.