[doorgunner69]

After some thought, I suspect they are speaking of the slower velocity of electromagnetic radiation through materials. Like is evident in prism effects.

Maybe these particles are not affected by the material dielectric or refractive value, so they are effectively moving faster than photons while in the stuff?

[ETL]

Maybe these particles are not affected by the material dielectric or refractive value, so they are effectively moving faster than photons while in the stuff?

Ok, this I'm somewhat familiar with. I've read in articles that neutrinos from distant stars can reach earth before photons due to this or a similar phenomenon. Might be that the photons take longer to escape the star.