What happens if EU turns around and declared publicly - “well, we will extend the deadline for Brexit negotiations until 2020?”
Ie) EU simply allow all present agreements continue as present. Flow of goods, etc... continues as normal - thus giving time advantage to the remainers in UK Parliament and Government.
While the Oct. 31 deadline is a British deadline, a hung parliament and frozen government may simply ignore it, and remainers will take the short-term life line.
If either the Lords or Johnson can kill the remainer bill as the two comments I quoted discuss then Johnson can as PM take the UK out on Oct. 31 and there will be nothing the EU or Parliament can do about it.
1. The rest of the EU cannot do that. Extensions have to be requested by the country invoking article 50. The UK asked twice for an extension and got it.
2. The other 27 countries in the EU now want the UK out. They are too much of a drama queen to keep their membership. Better out is the eu opinion.
3. The Oct 31 deadline can only be extended by the UK by specifically amending their law and specifically requesting it.
The UK will crash out on October 31. That is still 90% sure