Latest products have the same problem!

I have a new D8000 TV and HT-D6500 HT home theatre. I have the same maddening problem - the HT switches to Digital input a few seconds after switch-on. Configuration is as recommended: Sky box HDMI to HT HDMI1 input, HT HDMI to TV HDMI2 input, Anynet+ and CEC enabled. As this is the default configuration for anyone with a satellite or cable source it must affect millions of users. Is there really no solution? Surely there should be a setting to lock to source to the default? the only answers seem to be to turn off Anynet+ (the main reason for buyng compatible Samsung products) or degrading to stereo sound by routing via the TV (not much point in having a home theatre then).