// ==UserScript==
// @name         Legacy Chat
// @namespace    http://tampermonkey.net/
// @version      0.1
// @include        *.twitch.*
// @require      https://code.jquery.com/jquery-3.2.1.min.js
// @grant        none
// ==/UserScript==

var hosturl = window.location.href;
var chan = hosturl.split("/");
setTimeout(function() { javascript:$(".chat__pane").html('<embed src="https://www.twitch.tv/'+chan[chan.length-1]+'/chat" class="full-height block flex-grow-0 flex-shrink-0 relative"></embed>'); },50);