Powering Raspberry Pi through 40-pin expansion port also nicknamed GPIO due to a large number of General Purpose Input-Output pins frees USB-C port for other activities like Wi-Fi, Ethernet or Bluetooth connection sharing or file sharing.
I've used Android 14 installation from the previous video ( • UNLOCK your Raspberry Pi 5's full potentia... ) for a sharing demonstration.
Watch the video to see how it works! I've been amazed!