Do you really think that the CIA has no contacts with the FSB?
Of course there are informal contacts the CIA and FSB didn't have a written agreement stating co-operation in military intelligence regarding threats to Russia did they?
In Article 2, point. B FSB-SKW contract we read:
"The Parties shall assist each other in the following main directions of cooperation in the field of military counterintelligence: counteracting the intelligence and subversive activities of special services of third countries directed against the Russian Federation or the Republic of Poland".
Meanwhile, Article 8 of the North Atlantic Treaty says that none of the NATO member states may conclude international agreements that would be contrary to that treaty.
According to one of the creators of the series "Reset", prof. Sławomir Cenckiewicz, the agreement is an act of betrayal of Poland and allies.