Regarding Amazon Music integration

I'm new to Amazon Music and I'm currently using a 4 month free trial.

I am curious whether I may still have an issue regarding how AM is linked to my Sonos account. I can play music via Alexa and AM no problem. But what I'm missing is that if I start playing via Alexa or the Sonos app on my phone let's say, when I pull up the Amazon Music app on my phone or desktop it isn't sync'd with what's playing. When I use Spotify I don't have this issue. I can start playing music either from the Spotify app or via the Sonos app or via either voice assistant and when I open up my Spotify app, it's sync'd and showing what's currently playing and I have control of the volume and I can pause or skip etc.. I don't get this at all with Amazon. Is this the normal behavior for Amazon Music with Sonos?