For context: the French and the German have been alternatively at war and allies since the times of Clovis and Charlemagne, a millenium before Bismark made modern Germany a thing (in occupied Versailles, in what was perfectly calibrated to be a complete French humiliation). And the Poles were on the wrong side of brutal occupation and a genocide during WWII. So both countries would have good reasons to be very skeptical of a powerful Germany.