Norwegian seems more preoccupied with getting up the noses of IAG and the other big boys at cities like LON, BCN, PAR and ROM to be bothered with longhaul and TCX at MAN for the moment.
If anything it's Norwegian that has some behind the scenes sorting out to do given recent media coverage about transatlantic cancellations from BFS, SNN and other flight disruptions. This time it's blamed on pilot shortages and later than expected MAX deliveries - previous years we've had pilot strikes, aircraft shortages, and a messy 787 introduction. All the signs of an airline growing perhaps a little faster than it can manage, but I hope it works out for them.