New add-on boxes that extend and supplement the functionality of existing Premiere DVRs aren't all TiVo had to show off this week at the Cable Show in Boston, as it also demonstrated the fruits of its new partnership with Pace. The result is this XG1 gateway, a six-tuner DVR that's intended to be sold by TV providers and then hidden away in a closet, quietly distributing video to smart TVs or extenders located throughout the house. It runs TiVo's software with support for multi-room video, MoCA, mobile and tablet remote apps and at least 5