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I thought Slack has video rooms?

Yeah they have video rooms... Hallway can use any video room software

I'm 100% unclear what this product does. Slack already has video, or you can use any other video room software to also do what it already does?

What am I missing here?

Oh it posts hangout rooms every X hours in any channel you want so you and your colleagues can have a 10 minute chat. It's a fun break from work