RF Coexistence with OpenThread and BLE?

[#include<benedikt.h>]

Hi guys!

I have a project where the ESPs build a OpenThread Network (Matter over Thread with the esp-matter repo) and now I want to add BLE functionality to the device. The NimBLE stack initializes perfect, but when the BLE scan starts the OPENTHREAD messages return a ChannelAccessFailure.
With a little research I found the RF Coexistence, but there is only BLE and WiFi mentioned: ESP-IDF Programming Guide
Is there a solution for my problem, or should i just add another chip and use it with the RCP-Software, so i have practically two antennas.

Thanks.