The dedicated stereo outputs (both XLR and RCA) can either be configured to be a 2 channel downmix OR as front R/L to be used in conjunction with the rest of the multichannel outputs. That choice is made in the Setup menus. Even though they're still using just a pair of DAC channels, the rest of the DAC implementation is better on the stereo outputs.
Thanks.. I think this is new, I could not do that (or never figured out how) with the 95, so that's great!