NYC
My bet is that the discussion was with UA on resuming EWR-BRS, and we did lose out to NCL.
I'm still sceptical that direct TATL can become a bedrock service from BRS. There's so much competition across the Atlantic from BRS (KL/DL via AMS, EI/AA via DUB, BM/LH via FRA, SN/UA via BRU), plus now WOW via KEF, and of course competition against BRS from other similar sized airports in Europe wanting a direct US flight.
It's a nice headline service to have, but from a traveller's point of view, if I want to get to anywhere else in the US other than NYC, it's probably easier via AMS/DUB/FRA/BRU and then direct over the Atlantic rather than connecting at EWR (assuming it's BRS-EWR) and being constrained to UA metal.
I loved flying BRS-EWR (from the first flight to the last flight), but I wouldn't want to bring it back at the expense of richer connections into Europe, or have it wilt as it did last time. (Although the upgrade opportunities were always excellent).