FR 6301 then FR 3143 at Barcelona
Sofia → Barcelona → Milan Bergamo
Timetable, Barcelona time
23:15FR 6301 from Sofia at the gate
21:55FR 3143 to Milan Bergamo leaves the gate
22 h 40 apart on the timetable, overnight
FR 3143 leaves 22 h 40 after FR 6301 arrives on the timetable: more than half a day, so not a connection we count.