Merge highlights in DT3 across page break in PDF

Is there a way of merging or otherwise connected highlighted text in a PDF across a page break ? Usually the headers and/or footers from the page get in the way. A general merge capability for highlights (if technically possible) would be a good and useful tool to have.

Did you try Tools > Summarize Highlights?

Sure - that works and is likely the only way to create such summaries.

The disadvantage is that the function creates a separate document and I lose the ability to display highlights in the right-hand inspector together with the source document. Technically I assume highlighted sections can span pages ?

No, PDF annotations (like highlights) are limited to one page.