Maybe if Johnson has to ask for an extension he should ask for one so the Northern Irish can have a referendum on whether they want to be in the customs union with a border in the Irish sea, or outside the Customs union with a border between the North and South. One or the other. Everyone claims to know what the Northern Irish want, but how about actually asking them? Yes they voted marginally to remain, but that was voting as a part of the UK, I suggest this would move on from that result. Whatever the Northern Irish decide, so be it, the Brits, Eire, the EU, should accept their decision.