Note: For USB-C, there already are a number of cheap docks which provide HDMI and Ethernet and can also power the host. The keyword seems to be "USB-C PD hub".
Not sure though if those actually let you route the phone's GPU to a second screen or if they just have a cheap additional GPU built-in.
Not sure though if those actually let you route the phone's GPU to a second screen or if they just have a cheap additional GPU built-in.