Facebook’s Messenger app, one of the most downloaded apps in existence, is slowly but surely allowing you to do just about everything. You can call an Uber, settle up checks, or use it as a social network. It can even be a Skype replacement. So adding Spotify seems like the next logical step.
You're probably not missing anything, but it is worth checking occasionally.
This has been a long-requested feature.
Spotify has not announced the feature’s launch, but many users have reported seeing real-time lyrics on their Nest Hub devices.