Please go to your profile page for the forum by clicking on your name, and look at the top of the middle column where you will find an area titled "My Private Support Cases".
There you will find a link to the private board where you and the agent may exchange information. This should be checked on a frequent basis as the agent may be waiting for information from you before they can proceed with any actions. Please keep all correspondence regarding your issue in the private support portal.
If a forum member gives an answer you like, give them the Kudos they deserve. If a member gives you the answer to your question, mark the answer that solved your issue as the accepted solution.
If you wanted to use both the Tivo and the set top box at the same it would be possible to use VOD. You can use a coax splitter to run a signal to both boxes and put them on two different inputs on your television.