I understand the difference between the “lossless” and “enhanced” labelling of the signal path and am not really concerned by the following, but I wondered why “crossfeed” (for headphones) is labelled as “lossless”, whereas other, what I had considered similar, operations such as headroom management are labelled “enhanced”.
e.g. here is a screenshot of my signal path, where volume levelling and headroom adjustment (and also sample rate conversion) are marked as enhanced, but crossfeed is marked as lossless: