nRF52 RSSI Measurement Bandwidth

[abc]

Is the nRF52 RSSI block of the RADIO module based on the entire 2.4GHz ISM band, or can it be configured to only measure a given 1-2MHz band of interest? According to the datasheet block diagram, it appears that the RSSI module does not receive any filtering of the antenna signal.  (Image source: https://infocenter.nordicsemi.com/index.jsp?topic=%2Fps_nrf52840%2Fradio.html&cp=4_0_0_5_19_7)

If it's over the entire 2.4GHz band, then won't it be potentially picking up Wi-Fi and Bluetooth signals that are not of interest?  (Image source: www.element14.com/.../bluetooth-low-energy)

----

Just to give the motivation behind this, I want to be able to probe individual 2.4GHz channel interference so I can use my own "channel selection algorithm" with ESB.

[ketiljo]

The block diagram doesn't show exactly where the RSSI is measured. This actually measured in the receiver chain, just before the demodulator. So the value you measure is the actual RSSI level at the channel the receiver is set to.