It's cool, hey? How AMD (and others) are now doing their CPUs is a good example: there's often several CPU "chiplets" and then one IO chiplet on the same package. [0] is the first good search result.

Given what they've done with the M1, I highly suspect Apple will do something like that for their higher end machines.

[0] https://www.anandtech.com/show/16148/amd-ryzen-5000-and-zen-...