It would be nice to have a chat because there are a lot of active user. P.S if someone had posted this already. Then sry
That's essentially what the forums are for, but you're always free to make your own chat group and share it with people that you want.
On my phone, the icon is right next to my username in the header bar. It's basically a pm feature which xenforo calls conversations since you can share messages with more than one person, basically making them private threads.