In reply to Serpico:
Indeed. It's very impressive. In a similar way to Staminaband PUTP being very impressive (and technically 8c+) but not quite the same as doing (e.g.) Hubble.
Quote from the Big Up Blog
"We interviewed Dani about his linkups in the Ali-Baba cave when we filmed him there for Dosage V, and he said he considers the cave a sort of laboratory of hard movement, with the ultimate goal being to climb something of comparable difficulty up a big, beautiful wall, which is what Chris has now done."