BA 371 then SN 2094 at Heathrow
Toulouse → London → Brussels
Timetable, London time
11:10BA 371 from Toulouse at the gate
11:05SN 2094 to Brussels leaves the gate
23 h 55 apart on the timetable, overnight
SN 2094 leaves 23 h 55 after BA 371 arrives on the timetable: more than half a day, so not a connection we count.