Hmm, I am a Tidal subscriber and missed this. I'll look into it.
I have experimented with various crossfeed implementations over the years with varying results depending on the source material and crossfeed used. Sometimes better, sometimes worse, sometimes just different. With binaural recordings like the Chesky test tracks, what I experience is a very wide 'headstage' but little front-to-back differentiation. Wonder if that is just how I hear? Anyone else have any experience with binaural recordings or crossfeed?