Both things are wrong. It's not a dialect in the sense that it is not the same language with special intonation, some new words and new idiomatic sentences. It has its own (much simpler) conjugation and declension scheme. Much closer in feel to a creole.
Its written form is also not german. Good luck reading some of the züri by mike comic strips as a german reader.
On the other hand my gf is from Mallorca and they have their own language distinct from Spanish. And she understands more french than me because it's closely related. Not enough to have a conversation though.
Both things are wrong. It's not a dialect in the sense that it is not the same language with special intonation, some new words and new idiomatic sentences. It has its own (much simpler) conjugation and declension scheme. Much closer in feel to a creole.
Its written form is also not german. Good luck reading some of the züri by mike comic strips as a german reader.