I am not a a lawyer but to my knowledge, you can file premium processing but not I-485 simultaneously unless visa bulletin is current for your date of filing and USCIS hasn’t asked you to follow final action date table

It won’t work that way. Your I485 will be denied because it is not current. The I140 on PP, will be processed within 45 business days. Use an app to calculate this accurately, taking into account U.S. vacation days. I see many people complaining about waiting for 60 days, but they're not even at 40 days yet!

Thank you! I’ve seen so many people waiting for two years just to get a response on their I-140. At least with premium processing, I’ll only have to wait 60 days... but I heard that when you file for premium processing, USCIS is more likely to issue an RFE.

If your date is not current and you are from a backlogged country you might be better off opting for premium processing. And if it is EB2NIW then it is 45 days if it is EB1A then you will get a response in 15 days for your I 140... You need to have an approved petition to secure a priority date.

no

i did PP for I-140 (EB2-NIW) and got approved in 5 days. but i filed i-485 when PD became current. that is almost after 1 year

thank you all for your responses. it’s a EB2 NIW - ROW (France). I’m already in the US with J1 visa that has to be extended this year for 2 years. I hope I will get a response before this date