What is Conversation Awareness for AirPods, how does it work and how do I get it?

Apple’s AirPods Pro (second generation) have some great noise cancellation features that ensure that the outside world doesn’t encroach on your listening enjoyment. You can immerse yourself in your favourite music or block out the world with the latest episode of your favourite podcast. Sometimes, however, you might need to be able to hear the outside world, just for a little while at least. If you bump into someone you meet, for example, not being able to hear a word they’re mumbling at you isn’t ideal.