Investigation - iOS only, AEC, AGC, HPF - mixing multiple audios result in low volume

Hi,
We are having some audio issues when mixing different sources of audio on an iOS device.
Specifically, we are mixing a WebRTC Audio with an AVPlayer stream - the result is a very low AVPlayer stream audio. We suspect it has to do with the AEC, AGC, and HPF functionalities on the iOS device.

We are looking for someone who will be able to help us investigate and potentially resolve this issue.


Cheers,
Nikita