AVAssetWriter not working with videoChat mode of AVAudioSession (iPhone 14 Pro only)

Question

I have a video conferencing app and we are setting up AVAudioSession to videoChat so that we can get echo cancellation.

let options: AVAudioSession.CategoryOptions = [.mixWithOthers , .defaultToSpeaker, .allowBluetooth]
try session.setCategory(.playAndRecord, mode: .videoChat, options: options)

I also want to do local recording of audio samples using AVAssetWriter API. Setup of AssertWriter is as follows:

let audioAssetWriter = try AVAssetWriter(outputURL: fileURL, fileType: .m4a)
     
let settings: [String: Any] = [
AVFormatIDKey: Int(kAudioFormatMPEG4AAC),
AVSampleRateKey: Int(audioParameters.samplingRate),
AVEncoderBitRateKey: Int(audioParameters.bitrate),
AVNumberOfChannelsKey: Int(audioParameters.channels),
AVEncoderAudioQualityKey: AVAudioQuality.max.rawValue
]
       
let assetWriterAudioInput = AVAssetWriterInput(mediaType: .audio, outputSettings: settings)
assetWriterAudioInput.expectsMediaDataInRealTime = true
audioAssetWriter.add(assetWriterAudioInput)

I am seeing that on the iPhone 14 Pro,

assetWriterAudioInput.append()

is failing. Everything works fine on iPhone 13 and older devices.

Is anyone else seeing this issue on the iPhone 14 Pro.