> Does the new Home Hotspot impact my Internet speeds or data usage?
> The broadband connection to your home will be unaffected by the new feature.
Doesn't sound consistent with the prioritization claim since prioritization still implies the speed may be affected by the guest network. If you're right, then that's kind of a bold (misleading) thing for Comcast to say in their FAQ.
If the author is doing this by using the neighbor's WiFi (as mentioned in some other comments), then I don't see how this has anything to do with XFINITY WiFi specifically, or any loopholes - stealing bandwidth from a neighbor could be done (in theory) with any open/accessible WiFi connection of a neighbor.
Again, he's not doubling his bandwidth based on the above and a whole host of other reasons beyond these.
For those who try I'd say post true bandwitdh and latency test comparisons using multiple sessions that are shown using both links. Its actually pretty funny to me, having been in network engineering for well over a decade, that people are so passionate that they're sticking it to Comcast and "doubling" bandwidth with nothing to back it up. But, whatever floats your boat.
DOCSIS (not DOCCIS) can do a Gb/s, and that's just to one modem, not the neighborhood as a whole.