What about Teams running against a Lync server where you can only establish chats with internal users, and chat with external users is available only through a

What about Teams running against a Lync server where you can only establish chats with internal users, and chat with external users is available only through a fake meeting set up in outlook? And where the 1to1 video calls start in skype 4 business instead of teams. Plus when running multiple instances the call goes to the first instance