A guy on the AVS forum asked why he couldn't get Dolby Digital 5.1 from his 722 with the HDMI going to his AVR. I read my 622 manual and it looks to me like DD/PCM are output on the toslink and only PCM is output via HDMI. I'm using component/toslink to my AVR for surround sound and HDMI from the 622 to my TV for watching without the receiver so I have no problem. Are my assumptions correct about the sound from the 622/722?