EC 7154 then FR 3166 at Barcelona
Milan → Barcelona → Palermo
Timetable, Barcelona time
17:25EC 7154 from Milan at the gate
11:30FR 3166 to Palermo leaves the gate
18 h 05 apart on the timetable, overnight
FR 3166 leaves 18 h 05 after EC 7154 arrives on the timetable: more than half a day, so not a connection we count.