You mean a cross ethernet cable?

Or using Bluetooth? Or using local WiFi (direct or not).

> You mean a cross ethernet cable?

If both machines have an Ethernet port.

> Or using Bluetooth?

Half the time I need a dumb pipe, it's from personal to work. Regrettably, work forces me to use macOS, and macOS's bluetooth implementation is just an utter tire fire, and doesn't work 90% of the time. I usually fall back to networks, for that reason.

Of course, MBPs also have the "no port" problem above.

> Or using local WiFi (direct or not)

If I'm home, yeah. But TFA is advertising the ability to hole-punch, and if I'm traveling, that'd be an advantage.