OK, still no signs of anything hiding, but in my experience, there is usually a thermal solution dedicated to the display. Time to go digging!
Another 30min minimum heat and careful prying exercise in patience here.
But your patience (and massively powerful heat gun) will be rewarded. I started at the ear speaker and slowly worked a chisel blade Exacto-knife into the gap. It was incredibly delicate work. Note how thin the bezel is. I'm shocked at how powerful the adhesive was on this one.