My employer ended my employment due to COVID reasons on May 31, 2020 but I never received an official termination letter. Calculating the grace period depending on the assumed termination date mentioned above, I have till July 30 to find a new job. Should my new employer give me an offer or start the H1B transfer application before July 30? What happens if they fail to do so in time? Can I extend the grace period on the basis of having an offer in hand? My final interviews with potential employers are being withdrawn because of the time restriction.