Do I need a Dolby Atmos TV for Dolby Atmos?

I have a TV that does not support Dolby Atmos, but a sound system. Now I'm not sure, does it mean if a TV has Dolby Atmos, that the TV directly outputs Dolby Atmos (which can't work properly anyway) or does it say he can pass Dolby Atmos on?

Can I then say Dolby Atmos streaming on Netflix or Prime without my Tv owning it?

You can play movies with Dolby Atmos on your TV at any time. Dolby Atmos is a sound format that you can use with appropriate AV receivers. Is an even better sound experience.

In addition to Cyberzwerg's contribution, which correspond to AVR alone does not help, this includes the Atmos speakers…

https://www.heimkino-atmos.de/Dolby-Atmos-Lautsprecher/

… Then the BluRay has to be mixed in Dolby Atmos…