Page 20 of the owner's manual says this about the HDMI inputs and output:
19. HDMI INPUT CONNECTORS
Use to connect the Cinema 11a to components with an HDMI output such as cable and satellite boxes, as well as DVD and Blu-ray players.
16. HDMI Output Connector
Use to connect the Cinema 11a to a TV or projector with an HDMI input.
The Cinema 11a clearly performs HDMI switching and passthrough of video via HDMI, but with no additional video processing.
What people seem to be forgetting is that in order to extract and decode the lossless Dolby Digital and DTS codecs from Blu-Ray, the AVR or Pre-Pro must accept an incoming audio/video data stream. Many AVRs/Pre-Pros will then perform additional video processing if desired, or will simply pass the video stream through to a tv or projector (just like the Cary) after extracting the audio data.
When passing the video data straight through, all of the tests I have seen show no loss in video quality. There are some people who will use an HDMI splitter at pass audio/video data to the AVR/Pre-Pro for audio data processing while at the same time bypassing the AVR/Pre-Pro circuitry entirely for video. Is this better than using a video passthrough in teh AVR/Pre-Pro? I don't know but I seriously doubt it.
If you are not concerned with the lossless codecs or multichannel pcm from Blu-Ray via HDMI and are only listening to lossy codecs via Toslink or coax/XLR inputs, or even multichannel analog, then there is no need to route any video to any AVR/Pre-Pro. Audio can be routed to the AVR/Pre-Pro and video can be routed directly to the display device using the interface of your choice.