Chapter 6 forward corresponds well to nand2tetris, but, yes, at a higher level (it doesn't offer a project or homework). The first 5 chapters are probably the lightest portions in Code and offer historical and motivational reasons to explore code (as a general concept). 6 is where binary logic really starts, and then the later chapters build out a CPU.

If the goal were to use these two materials to develop an understanding of computers and digital logic, probably the most natural combination would be to read all of Code and then do nand2tetris, or to read the first few chapters of Code and then finish it while doing the first half of the nand2tetris course. Code's in depth material corresponds most strongly to the hardware portion of nand2tetris.

maybe, I read some discussion about it and someone suggested something like reading Code and seeing if it's interesting then partaking in nand2tetris. Also nand2tetris actually makes you implement everything yourself.