This can probably be done. But more details is needed, such as what is considered an ‘object’? Text frames, images, etc. And where do you want to output this info? To a text file, or on the page directly?

This time I made it easier. It’s just a regular script that you have to execute, it doesn’t require the FindChangebyList script.

Read here on how to save the script.

I’m not sure if it works as expected, so please let me know.

app.doScript(main, ScriptLanguage.JAVASCRIPT, undefined, UndoModes.ENTIRE_SCRIPT, "Fix Duplicate TOC Entries");

function main() {
    var myDoc = app.activeDocument;
    cleanPrefs();
    app.findGrepPreferences.findWhat = "(?s)(bw+?b)(s+?)(d{1,3})(s+?)(1(.+?)(d{1,3})(.+?))+";
    var foundText = myDoc.findGrep();
    for (var i = foundText.length - 1; i >= 0; i--) {
        var curEntry = foundText[i];
        app.findGrepPreferences.findWhat = "r(?=.)";
        app.changeGrepPreferences.changeTo = ",s";
        curEntry.changeGrep();
        app.findGrepPreferences.findWhat = "(?<=,s)(w+?).+?(?=d)";
        app.changeGrepPreferences.changeTo = "";
        curEntry.changeGrep();
        }      
    cleanPrefs();
    }

function cleanPrefs() {
    app.findGrepPreferences = app.changeGrepPreferences = null;
    }

You have to convert the text to outlines, and then use pathfinder operations to achieve the result you want.

Try omitting the version name entirely, as such: tell application "Adobe InDesign".

An EPUB might be the best solution. As with an EPUB you will probably get the most unified functionality (more than a PDF, for sure).