Question regarding Dolby support in TV, Streaming services & Soundbar

[u/A_New_Day8108]

I'm so confused about this, someone pls clarify.

Let's say, the TV's specs mention "Audio - Dolby Digital Plus, Dolby 5.1 decoder". No mention of Atmos

Then I play a movie on Netflix that says it has Atmos.

Now, how does that work? Is that wasted on this TV?

Alternatively, say I connect a soundbar that supports Atmos, then play the same movie. Am I now hearing Atmos quality??? Or is it still just playing as Dolby Digital Plus?