I have my TW Scientific Atlanta cable box hooked into my 2313 with an HDMI cable. I also have HDMI cable leading from the Denon receiver to my Samsung 40 inch LCD TV on monitor1 position. There is no other connection to the TV. ( No TV Audio).
Other connections to the 2313 are HDMI for my Samsung blue ray player and analog connections (red, white, yellow) from a Pioneer DVD recorder.
I have two problems.
One. When the cable box is on and the TV and Denon are off, the Denon will sometimes begin with the CBL/SAT as the input visible on the TV, but it will revert to TV Audio. This is true whether I turn the Denon on with the red power button on the 2313 Remote or by simply pushing the CBL/SAT button to turn the Denon on. Sometimes I have to hit the CBL/SAT button several times before this automatic selection of TV Audio finally stops. Until then there is no video from the box on the TV.
Sometimes HDMI passthrough works when the Denon is off and sometimes not.
I tried to search this forum for the answers to these problems to no avail.