//NJ
There are no border checks in most of mainland Europe.
For goods that originate in the EU.
British goods do not.//
I think we’re either at cross purposes or you are under a misunderstanding:
//If we have goods that have to be transported across multiple countries in the EU, we have to complete documentation that satisfies the border checks per country.//
There are no border checks “per country.” Whether UK goods enter the EU in France or in Poland, the checks are the same. And once they’re in, they’re in. There are no further checks. Perhaps I misunderstood what you were saying.