Pole and Czech - two brothers - separated since 500 years...

[Aldaris]

I can say that the Silesian Polish dialect (and in some degree also the Kashubian one) is for me more understable than normal Polish thanks to the German loanwords.
Anyway, the more German words you know, the more you will understand Czech slangs and some Czech dialects

Ten dement jeste neni zas zabanovanej? Se celkem divim, ze vydrzel pomerne dlouho - na tenhle pokus.

Nicmene, ne ze bych uplne nesouhlasil s tou puvodni premisou.

You're a bro, OP, kind of a strange one, but nevertheless.

[cass]

I can say that the Silesian Polish dialect (and in some degree also the Kashubian one) is for me more understable than normal Polish thanks to the German loanwords.
Anyway, the more German words you know, the more you will understand Czech slangs and some Czech dialects

Kashubian has less German loanwords then Polish.