Xbox one and PC at the same time possible to play?

I'm thinking about getting Sea of Thief and wondering if I can download it on PC (win10) and then download it on the Xbox one with the same account and quasi along with Xbox one and a friend on the (my) PC can gamble together? So the game basically "divide" just does not stop Xbox one and Xbox one, but Xbox one and PC.

How exactly now? You want to buy it on both platforms? Then you have to buy the game twice, once for the xbox and once PC

Whether Crossplay is possible, I do not know, but the scores will not be the same, if you play on the xbox, then the score is not on the PC, I hope I got it right

Man can play the games of the Xbox on PC on win10. My question is whether man can share the Xbox with the PC or whether it is only under the Xbox to share the purchased games?

No, that does not work, games do not work, you have to buy them separately for both

Or am I mistaken, look there that's fine

So it works, my question is just if it is both at the same time to gamble. If I'm registered with my Microsoft account on my Xbox as the main account someone else can play on the Xbox with his account my games. Can he play the games but also if I start the same game on the PC with my account and gamble. Hope I'm a bit more accurate this time…

Register the console as a home console (https://tipps.computerbild.de/unterhaltung/gaming/xbox-one-spiele-sharen-so-gehts-521597.html)