Canon EOS R6 Advanced User's Manual page 583

Terminating Wi-Fi Connections
Perform either of the following operations.
On the Camera Connect screen, tap [ ].
On the [ Wi-Fi on] screen, select [Disconnect,exit].
If the [ Wi-Fi on] screen is not displayed, select [
Select [Disconnect,exit], then select [OK] on the confirmation screen.
: Wi-Fi/Bluetooth connection].
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