You cannot work for both companies at the same time unless one of the applications was filed as a concurrent H-1B filing, which it does not sound...

Safe duration to leave employer after green card?

There is no set time, but it is advisable to wait at least 3-6 months so that you do not give the impression that you only stayed with them in...

No, I would not expect you to have any issues.

Can US based company file h1b for foreign independent contractor?

Yes, the company in the US can file an H-1B for you. This would be a new H-1B, not subject to the cap. However, due to the proclamation you will...

Can spouse come to US considering the H1-B executive order and recent exceptions?

If you were in the US on the effective date of the proclamation i.e. June 24, you are exempt. This means your spouse is also exempt so once the...

You should not rely on the USCIS website and should wait for the approval notice. While it is possible that USCIS could revoke it this is unlikely...

They can only stay until the date which you requested on the I-539. So if you requested until Dec 3, 2020 that is the date they can stay until,...

I agree with my colleagues. Unfortunately a COS to F-1 would not be approved in these circumstances.

Based on the sequence of events I would have to agree with my colleague. I do not think the clock has reset in your case. You wil need to start...

Can H1B Extension Candidate stay in USA after 240 day expiry?

Yes, you can stay beyond the 240 day mark, but you are not allowed to work.