Transfer games from one xbox to another xbox

I got a new xbox and on my old one I used my dad's microsoft account. On the new one I wanna use mine. I made a post on r/xbox if I could trasnfer games by adding my dad's account onto the xbox and they say yea HOWEVER the post got taken down so I couldn't ask my follow up question. If I make my new xbox my dad's home xbox to transfer the games and in like a year or 2 my dad's home xbox changes to a different xbox will the games stay since I have progress in them?