BA 1383 then SN 2104 at Heathrow
Manchester → London → Brussels
Timetable, London time
07:25BA 1383 from Manchester at the gate
06:50SN 2104 to Brussels leaves the gate
23 h 25 apart on the timetable, overnight
SN 2104 leaves 23 h 25 after BA 1383 arrives on the timetable: more than half a day, so not a connection we count.