[insomniac125]

Do you have optical out from your TV? That would give you sound on both with risk for delay/sync issues, otherwise there is no easy solution.
Why do you want/need sound output simultaneously to both units?
In Kodi you can choose one output for stereo and the other for passthrough so that would give you DD&DTS thru optical but still no sound on the TV simultaneously.

@Dr.Feelgood - I appreciate your helpful reply. I do have optical out from my TV, however just like many other TV's, it only outputs 2 channels.

My TV is up on the wall about 18 inches above my center channel speaker. If I only play movies/tv shows via my AVR, you can easily tell that the sound(mainly voices) comes from below the TV and not from the general area of the people on the screen. So I always use the TV speakers to help fill in the gap. All my other devices(PS3, Sat. Rcvr, etc.) play through optical and HDMI simultaneously without issue.

In addition to that, I mostly only use the TV sound when viewing and like to be able to simply turn on my AVR when I want 5.1 sound without the need to go in and change various OS and Kodi settings to switch to 5.1 audio. Kind of inconvenient in comparison to the rest of my devices.