Setting up Home Theatre

Has anybody tried to set up a home theatre system using tablo
Obviously start by running antenna into receiver as per cable set up
but getting signal back out to tablo box seems problematic. Options on my receiver are hdmi or rga(?) neither of which can go to tablo.

Tablo does not have an HDMI out.

You need to use a Roku or Fire TV or Nexus Player to playback Tablo Live TV or Recordings on a HDTV. You can connect any of those devices to your AVR via HDMI.

Tablo does not record audio in 5.1 AC3, the audio is 2.0 AAC.