- 1 h from Nürburg
Not really. 360 games are kind of running their own emulation on Xbox One. That's the reason you need to download the whole game on XOne and the disc is only for legit check. There isn't any data copied from 360 discs to XOne. There is no hardware compatibility for X360 titles on XOne.There is a difference though between being able to put a game disc into a system Vs a game company having to effectively rerelease an old title. Horizon must have just snuck in for a while before the licenses expired and then it went. Pretty sure Forza 7 is delisted now too, only way you can buy that now is on disc.
But there was hardware compatibility in X360 to XClassic. Running every XClassic game on 360 was prevented from Microsoft with a "whitelist" in the 360 operating system and only prevented by software and not hardware. Technical 360 can play every classic game (some compatibility issues aside) which is possible with a chipped 360. F.e. Need for Speed Underground 2 was on this list while Need for Speed Underground 1 wasn't. NFSU 1 does run flawlessly on a chipped 360.
You'll always be able to play delistet games if you bought them digital too. Like I said a X360 backwardscompatible game on XOne is a digital game.