There is a great book from brazilian writer Guimaraes Rosa which explores both "unusual" way of speaking portuguese and the role of chapters (by not having them over its >500 pages!).

The book is "Grande Sertão Veredas" (it has an ongoing translation to english which is going on for over 10+ years). Rosa is an educated diplomat, and he choose to explore the culture, language, landscapes and subjectivness of the place he grew, in some rural area of a small city in Minas Gerais.

At the beginning both "features" usually cause some frustration. It is really hard to understand some expressions or know who is speaking, or if its just a thought, or even when or where something is happening. And that goes on in an never ending continuum.

Nevertheless, if you keep going, you're rewarded with a incredible immersive experience. The unusual and becomes playful, the continum becomes the flown of a river (the Sao Francisco river!). And on top of all that, an epic sertanejo's Fausto slowly unfolds towards one of the best endings of brazilian literature.