BA 180 then SN 2096 at Heathrow
New York JFK → London → Brussels
Timetable, London time
05:50BA 180 from New York JFK at the gate
18:00SN 2096 to Brussels leaves the gate
12 h 10 apart on the timetable
SN 2096 leaves 12 h 10 after BA 180 arrives on the timetable: more than half a day, so not a connection we count.