Yep, that's exactly it. "is being" and "estar a ser"/"estar sendo" are pretty much the same thing. What english doesn't have is the "ser"/"estar" distinction, b

Yep, that's exactly it. "is being" and "estar a ser"/"estar sendo" are pretty much the same thing. What english doesn't have is the "ser"/"estar" distinction, both map to "to be".