>>35033494Reverse engineering it and dropping in the replacement iframe for the scrolling <div> isn't the hard part. The json output from youtubei/v1/live_chat/get_live_chat is pretty straight forward - see attached.
Implementing all of the additional features and doing it efficiently would've been far more difficult. I think the difference is the guys actually profiled their chat client unlike Susan's own team who assumed chat would move at maybe 1-2 messages per second.