I know that I could connect an ESP32 to a teensy 4 for wifi communication. I would connect the two via SPI.

However, can I use SDIO to talk to a 802.11AC module? I just haven't seen much talk of it. For example, the Sterling-LWB5 or WM828CC6-E6QT or WG3221-00.

There is a TON of talk about using the ESP32 and things for wifi. But for about $10, you can use SDIO and get 802.11AC for much faster data transfer. Right? Or am I missing something?