How to limit BLE advertising channels used by BlueNRG-2?

Hi,

By default, according to Bluetooth LE standard, BlueNRG-2 uses 3 advertising channels.

Is it possible to limit this type of communication to be performed only on one channel?

I would like to capture messages by BLE Sniffer. This is very simple device so it can listen only on one channel at the time. Now I miss some CONNECT messages and consecutive data exchange.

I suspect that the sniffer is listening on another channel when connection is established. Hence, I would like to limit this communication to one channel.

Regards,

Piotr