Or don't even normalize. The one podcast I regularly listen too regularly has guests record over the phone or DIY and they are often inaudible (to my over used ears). That'd be a great feature on spotify if it doesn't exist
Somebody should really make an easy-mode podcast recording app that functions as a phone call, but records the speakers locally, and then sends the audio to the host. It could even measure the latency on the call can cut that time out. This seems like it would be pretty trivial...