Using XPATH w/ JS

xpath.js

var div = document.createElement('div');
var result;

div.innerHTML = $('.tpSubtitleRegion_speaker .gwt-HTML').prop('innerHTML');

result = document.evaluate("//text()", div, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);

for(var i=0; i < result.snapshotLength; i++) {
    console.dir(result.snapshotItem(i));
}