Can I apply for H-1B after I-140?!

Hi,
I am not sure about which I should apply for first. Or will they contradict?

to Nellie:

I think you can apply for H1B after I-140. I was told that I can apply for H1B extension. (I myself plan to apply for H1B extension after I file I-140.) If you can extend it during the process of I-140, it shouldn't be a problem to apply for a new one, I supposed.

to Nellie:

You can apply for H-1B after I-140. My fiancé just changed her status to H-1B. She filed I-140 about 5 months ago.

to blackdog575:

Perfect! That's what I need to know. Thank you!