I use hangouts because it's right there in Gmail. The last few timse I looked at Chats, it couldn't connect with my other @gmail users. Now it does. That's nice

I use hangouts because it's right there in Gmail. The last few timse I looked at Chats, it couldn't connect with my other @gmail users. Now it does. That's nice. But rooms doesn't work yet (someone else said it's coming to Gmail), and I can't see how to make Chats show up in Gmail yet, so I can't turn off Hangouts yet, and is it even possible to? Will chat show up in the right sidebar of Gmail, or below the labels in the left bar?