And always have known. This one-way business has just been a misconception perpetuated by the regular press.
Only problem is, to get the two way capability you also have to have a two-way compliant host. Tivo is not one. To find out why, read one of the two thousand postings discussing this.
Comcast, Cox, TW, Charter and BHN are cabal companies.
(That is not a spelling error. Check the definition.)