I think you are right about that. IMHO it was pretty clear there was an impersonator walking around outside of Chelsea’s home the 9/11 she cratered and had to be put into a van like a slab of beef. But I doubt an impersonator could be completely convincing on camera speaking for her during the campaign.
I think that Patriot filming her potato-sack ass being tossed into the scoobyvan demoralized her campaign enough to kill off momentum and plunge it into disorg. No Q she has a body double.
https://www.earnthenecklace.com/top-10-photos-of-hillary-clintons-body-double-teresa-barnwell/
Top 10 Photos Of Hillary Clinton’s Body Double - Teresa Barnwell