I have a tuning adapter connected to one of my DVRs.
Can I still use MoCA?

Definitely. You'll just need to split the cable signal coming from the wall outlet before it reaches the tuning adapter. You'll then connect one coax cable from the splitter to the tuning adapter, and one coax cable to either the TiVo BOLT, Roamio Plus/Pro, or Premiere 4/XL4/Elite, or to the TiVo Bridge. Everything else in your setup can remain the same (including the USB connection between the tuning adapter and the DVR).



Using a tuning adapter with a Premiere or Premiere XL DVR

Using a tuning adapter with a Premiere 4 or Premiere XL4/Elite DVR