Well, lets give this a try...attached is my screen shot.
I had no upstream bonding until I took the Extreme 50/10 tier. When I had Blast! I had no upstream bonding, just the 4 downstream channels.
Comcast Steve says that upstream bonding only occurs (at least around here) with the 50/10 tier. He said in the Direct Forum that bonding is needed because of the faster upstream speed.
See also ---> »Allen Park, MI