Select the secondary channels of BLE

Hello,

I need your help about BLE channels. Currently, I use only the primary channel 38 for advertising data but, when the data are sent, I don't have the information of secondary channels (except the type, LE Coded, 1M, 2M).

Can we get this information using the BLE APIs ?
And, can we select  the secondary channels ?

Environment :
Nordic SDK with Zephyr 3.7.99
SoftDevice BLE controller.

Thanks in advance.

Best regards,

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