Hijacking the satellite radio antenna to use with a Stiletto

[bloads2001]

I recently purchased a 2009 Murano LE with the Bose sound system. The radio is XM-ready, but I want to keep using my portable Sirius Stiletto SL100. Instead of installing a second satellite antenna on the roof, is it possible to use the satellite antenna that is already installed in the vehicle and route it to my Stiletto instead of the vehicle tuner? I looked at the installed XM-tuner located by the spare tire, and found that the antenna connector looked different (smaller) than the magnetic antennas that I have mounted on the roof of other vehicles.

Has anyone tried to hijack the installed antenna and use it with a Stiletto instead?
Can I use an XM antenna with a Sirius radio?

Thanks!

[bloads2001]

Oh, well...I gave up today and ran a wire through the cabin to a magnetic antenna on the roof. Thanks, anyway...