Hungary and Poland have a very long history and the Soviet Union has little to do with that (but does some, namely 1956).

Since the Middle Ages, the kingdoms of Poland and Hungary have had shared borders, shared rulers, common values, common interests and perhaps more importantly common enemies.

https://www.thefirstnews.com/article/today-is-polish-and-hungarian-friendship-day-but-what-is-it-that-makes-this-relationship-so-special-20738

Hungary and Poland have a very long history and the Soviet Union has little to do with that (but does some, namely 1956).