FR 3008 then BT 686 at Madrid
Milan → Madrid → Riga
Timetable, Madrid time
19:50FR 3008 from Milan at the gate
17:15BT 686 to Riga leaves the gate
21 h 25 apart on the timetable, overnight
BT 686 leaves 21 h 25 after FR 3008 arrives on the timetable: more than half a day, so not a connection we count.