By default, the chunk size is configured to get the optimal throughput to the storage media.
For Sequential access media, chunk is defined as data between two file markers.
For an example of using the direct path load method, see case study 6, Loading Data Using the Direct Path Load Method.
The other cases use the conventional path load method.
Feel free to reach out to us on Gitter or by the email distribution list / forum. We typically recommend organizations depending Chocolatey look to managing their own packaging as opposed to using the Community Package Repository (https://chocolatey.org/packages) - packages there are not 100% reliable due to distribution rights with publicly available packages (which causes a major failure point). With those packages the following applies: Chocolatey does the same thing that you would do based on the package instructions.
Chocolatey is kind of like apt-get, but for Windows (with Windows comes limitations). Nearly exactly what you may already be doing, except wrapped up into a package file that allows you to modularize and easily manage order with dependencies on other packages. See The purpose of Chocolatey See What is Chocolatey? This usually means going out and downloading an installer from the official distribution point and then silently installing it on your machine.