I can't think of a more bloated way to communicate than putting a browser in the middle. For some quick numbers, compare web browser input latency to terminal [0] where one might run an IRC client. Even emacs [1,2] is fast and light in comparison.

[0] https://beuke.org/terminal-latency/#:~:text=6.2-,firefox%20(... [1] https://danluu.com/term-latency/#:~:text=terminal.app%20and%... [2] https://pavelfatin.com/typing-with-pleasure/#:~:text=0.8-,Em...