FR 155 then FR 4066 at Madrid
Bristol → Madrid → Catania
Timetable, Madrid time
11:35FR 155 from Bristol at the gate
07:00FR 4066 to Catania leaves the gate
19 h 25 apart on the timetable, overnight
FR 4066 leaves 19 h 25 after FR 155 arrives on the timetable: more than half a day, so not a connection we count.