Data Usage Difference?

[Barnes2000]

I have the Droid2 with unlimited data and the Mobile Hot Spot. On my data breakdown in my account info, it list "Domestic Data" and "Domestic Mobile Broadband Connect usage".
What is the difference in these? Does one reflect the phone's data usage and the other reflect the Hot Spot usage? Which is which?

I'm just looking to monitor the usage of my Hot Spot.

 

[takeshi]

Boradband Connect refers to tethering.