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Describe the bug
I have a use case that the app needs to play the background audio while being connected to the call.
It works fine when I use AudioMode.mono16K ( https://aws.github.io/amazon-chime-sdk-ios/Enums/AudioMode.html#/c:@M@AmazonChimeSDK@E@AudioMode@AudioModeMono16K ).

But when I try to use any other option like mono48K , stereo48K the background music is stopped.

This is how we setup the audioVideo and AVAudioSession :

let audioSession = AVAudioSession.sharedInstance()
if audioSession.category != .playAndRecord || !audioSession.categoryOptions.contains(.mixWithOthers) {
    try audioSession.setCategory(.playAndRecord, mode: .videoChat, options: [.mixWithOthers, .allowBluetoothA2DP])
let configuration = AudioVideoConfiguration(audioMode: .mono16K, callKitEnabled: false)
try session?.audioVideo.start(audioVideoConfiguration: configuration)

To Reproduce
Use the code snippet above to configure and start the call
Steps to reproduce the behavior:

Expected behavior
The background audio is not stopped like in case of the mono16K audio mode for other modes.

Screenshots

Test environment Info (please complete the following information):

Additional context

Hi @nonameplum Could you try integrating with CallKit and see if you still run into this issue?
Here is a reference on how to do that: https://aws.amazon.com/blogs/business-productivity/how-to-integrate-apples-callkit-into-ios-applications-using-the-amazon-chime-sdk/

to include the mixWithOthers option, e.g.:

try audioSession.setCategory(.playAndRecord, mode: .videoChat, options: [.mixWithOthers, .allowBluetoothA2DP])

Then if you start some music in the background and try to join to the meeting while using the mono16K you will be able to hear the background music still playing with "worse" quality, but still.

If you will pick any other option like stereo48K when you will try to join meeting the background music will stop playing.