[ Well. That is interesting. There's a spark of curiosity in Essek's eyes as he nods along, watching the way that Aziraphale's mouth moves.]

That is certainly one way to manifest a universal translation enchantment. I would be interested to test how the translation effect works under the constraints of a separate translation spell, Comprehend languages perhaps, or Tongues, though I imagine that with the power necessary to enchant the entire population consistently, such simple tricks as those would do nothing.