Thank you! This tip is very interesting and it would avoid CFC since it's just a branch (I guess) and PE would not be an issue as long as︀ I just did the work related to it from Poland.
Do you know about how︁ the revenue from the branch is taxed in CZ or where can I find info︂ about that? I guess that CZ would not want to double tax that income, in︃ that case it would just be 9% in Poland and 15% Czech dividend when distributing︄ to me.