This is how I had my TiVo hooked up before it died on me.
Antenna-->DSS box-->Tivo-->VCR-->TV using coax.
Using RCA/Svideo cables, I had the following
DSS-->Tivo-->TV
This way, I could watch live TV on the television through the normal channels. If I wasn't recording off of the DSS feed, I could watch that normally as well
If I wanted to watch TV through the tivo, I switched the TV to one of my video inputs with the remot and watched it that way. I could record from the DSS feed through the Tivo this way.
It's a little work, but it does work.