I forgot about that, never mind.
I don't think it would have the same shock, but I do think that it would have a lesser one. I agree with your assessment of closing your eyes for a few seconds. It would have a minor effect. Certainly not to the same level that doing it to someone who had never experienced it (which I don't include the Heralds in, as per Alder's point about type of Investiture not mattering, and them being incredibly Invested), but it would have some effect. When I close my eyes for a few seconds outside, I don't instantly adjust, it does take me another couple seconds after opening my eyes.
thank you!
If it's within sound of their voice, couldn't Jezrien create a vacuum, as we know windrunners can do and prevent the voice from going anywhere? Heralds don't need to breath, Stormlight sustains them, and it (might) prevent the distant transfer of Breaths.
That's one of the WOBs talking about windrunners controlling pressure, there's plenty more if you want to check.