4K boxes require Xfinity Modem?
I chatted with Customer Service to request 4K boxes for my TVs that are 4K, including a DVR. I have my own cable modem and router so was told that the 4K boxes are wireless and require a leased Xfinity router/modem. First, is this true, and second, does Comcast have a plan to allow the 4K boxes to work for customers with their own modems/routers? Thanks.