How to tell if a channel requires Facebook for chat?

Some streams require Facebook Connect in order to use their chat channel. Is there a way to detect this via the API or some information on their twitch page?

For example: requires facebook login and does not.

The message when you try to type in chat is:
You must Facebook Connect to send messages to this channel. You can Facebook Connect in your twitch settings under the connections tab.

To my knowledge there is no way to detect it without joining the channel and trying to send a message.