I don’t see the synergy of LGW BHD LGW for Norwegian, the NG could do it, but I wouldn’t want to land the MAX at BHD with a full load, it’s not even on our alternate list.
Going onto BFS LGW against EasyJet seems a bit pointless, the idea that you could launch from LGW to BFS then onto SWF doesn’t fly either the crew need 90 minutes preflight, the aircraft needs an ETOPS check before an ETOPS flight.
The SWF aircraft is on the ground at BFS for around 6 hours so you can’t do much with out risking delay to the outbound back to the US.