The USB interface can be routed to either the RA4M1 or the ESP32, actually. I expect most people will essentially just use the ESP32 as a wifi modem. A big rea

The USB interface can be routed to either the RA4M1 or the ESP32, actually. I expect most people will essentially just use the ESP32 as a wifi modem. A big reason to do this is that RF is hard. You really don't want to design a custom wifi board if you can at all avoid it, and using a pre-certified module for it greatly reduces complexity. Not to mention that very few wifi-capable chips support 5V gpio.