in the same breath

1.  Also, in one breath. At or almost at the same time. For example, Ed complains about having too much homework and in the same breath talks about going out every night, or The twins said, in one breath, "More cake, please." [Mid-1800s]
2.  not in the same breath. Not to be compared. For example, Karen's a good runner, but you can't speak of her in the same breath as an Olympic athlete. Also see in the same league.

The adverb has one meaning:

Meaning #1: simultaneously