Guy Verhofstadt, the European Parliament's main Brexit negotiator went quite far in his comments to the Dáil today with regard to the effects of Brexit on this island. Yesterday, he floated the possibility that Northern Ireland could remain in the single market or the customs union post-Brexit, much to the fury of unionists.
Today, his comments were even more pointed, referring to the border as "illogical" and "not natural", joking that not even the cows know where it is. Such comments go well beyond the context of the Brexit issue.
There has been comment recently that British Brexiteers see the NI/RoI border as a lever to procure concessions in other areas in their negotiations with the EU. Well, levers work both ways and the EU - with an economy that's some 7-8 times the size of that of the UK - will be able to do a lot more pushing.