Play Forza Horizon 4 with pc and xbox zsm?

I know that Forza is a cross-play so it is possible to play with pc and xbox players, but do you have to activate the xbox Game Pass Ultimate? At least that's how I understood it on the page where you can buy the game.

As far as I know, you don't have to activate the Game pass ultimate. You only need xbox live to play online

Thank you, then I'm glad.

Of course, both must own the game

That's clear to me thank you