Interesting
I suppose that the polishing brush is similar to the later '4-brush groomer' as fitted to later commercial models, for low-profile carpeting.
I wonder why the bag wasn't fitted in this mode. Surely it would help to catch dust particles released by the brushes?
The ill-fated UK Hoover 'The One' had soft brushes that were supposedly for 'all floor cleaning', but gave atrocious performance on carpeting.
