JS code for the chrome developer console to extract a CSV file from "Tabs from other devices" in chrome://history/syncedTabs

script.js

// To access the list-element within shadowroot I clicked inspect on the list and right-clicked on <div id="tab-item-list">
//    --> "Store as global variable", this gives you temp1 that is the basis for this cript
// There are probably better ways to access elements in shadowroot, but I didn't want to take the time to learn about it at this point :)

items = temp1.getElementsByClassName("item-container")

for (i = 0; i < items.length; i++) {
    item = items[i].firstChild;
    line = '"' + item.title.replace(/['"]+/g, '') + '","' + item.href + '"';
    setTimeout (console.log.bind (console, line));
}

// And then right-click in the console and "Save as...", remove the for-loop code on top of the file and rename it to CSV