Before the planned visit of chancellor Kohl, many talks were held, both between the heads of the two governments and also between their advisers - Mieczysław Pszon and Horst Teltschik. Many fundamental issues, which were to become the subject of talks in Poland had been discussed. The advisers also touched upon various details which could disrupt the visit or be poorly received by the public opinion of both nations and the world. Particular attention was paid to the issue of the confirmation of the inviolability of borders, the regulation of the situation of the German minority and the establishment of cooperation for the future. It was generally believed that in order to make this happen, all issues related to history would have to be clarified, i.e. it would be necessary to recall the guilt of the Nazis related to the damage done to Poles during World War II, but also the situation of the Germans who had lost their homeland (and the 2 million of them lost their lives) as a result of escapes, expulsions and displacements.