surprise with tagged .pdf

Unprecedented request from product manager: "Can you make a .pdf from this document that's suitable for automatic reading out loud?" As any Victorian novelist would say, it was the work of a moment … Save as .pdf, and activate the Tagged .pdf option

This immediately resolved one problem someone else (with inferior software, naming no names) had run in to; Acrobat no longer reads out the header and footer. But, it introduced a new one that nearly had me falling off my chair … here's what I heard when we hit the ToC.

"Contents. Introduction. dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot dot …"

Yes, Acrobat was conscientiously reading out the leader dots. I've adjusted the ToC layout as the quickest solution, but now have a document that doesn't look the same as all the others in the set. Does anyone have any tweak for getting Acrobat to skip the dots when reading out loud?

Thanks in advance!