Comment by ido

These days also directly connecting two computers to each other with a network cable (not via a network, directly plugging each end of the same cable to each computer) will establish a connection (I’m pretty sure it also works with USB cables but the “automatic” might then only work between specific operating systems- it’s been a while since I tried).

IIRC last I tried direct Ethernet connecting between a Mac and a Windows pc the other computer appeared as a shared drive and I could simply copy files from it (I probably enabled some sharing option but it was easy to do either way).