After I had some issues with my receivers ports, my xbox is now connected to the TV and from TV to receiver via Arc. (No eArc) So, a few of features of xbox will not be available, like Atmos, a few sound settings etc.
Edit: Audio passthrough is enabled in xbox.
Yet, the sound is clearer, louder and more impactful than what I get from my Sony TV at the same volume levels of the receiver. This coming from someone who can't tell Spotify from Tidal.
It's not that I want xbox to sound better. I would have liked it if the firestick gave the best performance as it is connected directly to the receiver and it is easier to use. No need to turn on another box to watch movies.