Thanks for all the help Mathew.
Alright, so here are three different logs from three different runs. The first two are using the PlayAndRecord AudioSession and the final one is with Ambient (I tried this because PlayAndRecord greatly lowers the output volume, but I can tackle that separately). The first two are slightly different second one has this error: CodecAudioQueue::processAudioQueue : Cannot enqueue buffer for audio queue. (err: -66632)
(Logs 3, 4 and 5 added to question)