<<<dub a dv tape and capture it >>>
You mean make a DV Copy, a "clone" to another tape machine? No, but you can get the analog output of the deck and force it to duplicate the viewfinder with the timecode burned into the picture. You can use those for decisions off-line (with a legal pad and a pen) even though the timecode *signal* is wrong. You can burn those onto DVDs, too, with a stand-alone DVD burner. Screening those is a lot faster than trying to truck to the end of a DV tape.
Even if you do try to produce a DV "clone" the timecode will not follow you.
The FireWire connection is a dialog. It doesn't split.
Koz