He just wants to tell his lies comfortably, without any worries about being contradicted. I'm sure Russert will be gentle with him.
If Fat Timmy had any cojones...he would INSIST on them being on together...but he doesn't.
THAT is why idiots like Dean get away with the lies and smears that they spew...they have the media's help.
Betcha Fat Timmy has a lot of "quotes" to try and trip up Mehlman...but, less so for Dean.