DCAs and stereo channel linking ... two different things, and both are needed
Stereo channel linking as implemented in the DL is a subset of DCA not different.
I'm sorry I don't understand.
My understanding of DCA is that it's a group volume override/delta control. DCAs only affect effective fader level of the channels they are governing, nothing else. If you've seen otherwise, please share.
A stereo channel is nothing more than two separate channels that are tied together as follows:
* routing to stereo busses is done stereo style instead of mono
* panning curve is different
* EQ, dynamics, gain, routings are effectively linked between the two channels, so one control does the same thing to both channels.
* but a stereo channel still carries two distinct channels of audio, L and R
Are you implying that there are boards out there that do some form of stereo image processing within the stereo channel?