One of the arguments for this service was big wigs in Apple and the various Pharmaceutical companies in Cork being able to fly in from the States instead of via LHR etc. Given that Norwegian don't codeshare, and won't be flying to airports were connections are possible, these services will need to survive on purely P2P. The US majors and EI are taking connections from all over North America through the US hubs into SNN and DUB (often into one and out if the other), I think they'll be okay.