Need Help: SDIO Pins in CM5 J1 Connector?

#1

According to the diagram, there are SDIO pins in J1.

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I want to use SDIO in J1 to communicate with BCM43456 on the base board for WiFi and Bluetooth. I’m having hard time to locate these pins in the spreadsheet
https://dl.radxa.com/cm5/v2210/radxa_cm5_v2210_pinout.xlsx

I know there are a set in U13-A, but I hope I can use the set in J1. Please enlighten me, anyone. Thank you.

#2

I guess the diagram is wrong, SDIO pins (AR37-38, AT38-40, AV38) are not exposed in the 3x 100 pin connectors. If I wanted to use the WiFi chip, I had to either use SDMMC pins in U13A or use PCIe 2.0 pins, mean I have to eliminate the possibility to boot from microSD card. The space is tight anyway. Does it sound right?