WiFi and Bluetooth for the Raspberry Pico W is provided by an Infineon CYW43439 (https://www.infineon.com/cms/en/product/wireless-connectivity/airoc-wi-fi-plus-

WiFi and Bluetooth for the Raspberry Pico W is provided by an Infineon CYW43439 (https://www.infineon.com/cms/en/product/wireless-connectivity/airoc-wi-fi-plus-bluetooth-combos/wi-fi-4-802.11n/cyw43439/ https://www.infineon.com/cms/en/product/wireless-connectivit...), which has its own ARM cores.