I have Tor running as a system service, but I also want to use Tor Browser Bundle to browse the web. This means (I think) that I have two copies of tor running, one as 'debian-tor' and one as 'user'. Because I have two different Tor instances running, I likely have two different guards that I always use at the same time. This is bad because an adversary can now track my physical movements more easily by observing my guards and correlating connections made to them.
How do I use Tor Browser Bundle with system tor, without letting the tbb-tor connect to the network?