FB 437 then EN 250 at Frankfurt
Sofia → Frankfurt am Main → Milan
Timetable, Frankfurt am Main time
13:15FB 437 from Sofia at the gate
12:45EN 250 to Milan leaves the gate
23 h 30 apart on the timetable, overnight
EN 250 leaves 23 h 30 after FB 437 arrives on the timetable: more than half a day, so not a connection we count.