FR 3813 then IB 717 at Madrid
Bologna → Madrid → London Heathrow
Timetable, Madrid time
21:35FR 3813 from Bologna at the gate
13:15IB 717 to London Heathrow leaves the gatealso LA 1539, VY 5179, QR 5345, BA 7056, AA 8755
15 h 40 apart on the timetable, overnight
IB 717 leaves 15 h 40 after FR 3813 arrives on the timetable: more than half a day, so not a connection we count.