Google "connecting 2 computers with USB"
If you have two PCs with USB ports, you can connect them to one another using a special type of USB cable called a “bridging” cable. You can also technically connect two Macs via USB, but you'll need to add a USB-to-Ethernet adapter and Ethernet cable to the mix.
There are also articles about it:
https://hardwaresecrets.com/connecting-two-pcs-using-a-usb-usb-cable/
We do it routinely with our phones (some of us), I admit IDK why it can't be just as easy between 2 computers?
AFAIK Next OS was discontinued about 30 years ago. Although some of it was used in OSX.