Searchable markers for tracked changes in exported PDF

Hi,

When exporting a document with tracked changes to PDF, I’d like to have searchable markers (perhaps as PDF bookmarks or invisible text) associated with these changes. Contrary to the ODT format in LibreOffice, a PDF file does not have a notion of tracked changes, so that there is no feature to navigate among the changes. Moreover, the change bars (in particular the one-line ones) are not very visible, so that they can easily be missed.

Alternatively, a second level of change bars with a minimal size to easily spot the normal change bars could also be useful.

Is there a way to do something like that?
Thanks.