its unrelated with the case number.
it really like roll the dice and got pick up by the officer or not.
i helped 5 people filing AOS between september 23 - Jan 2024
1. filed Sep 2023, got EAD in 30 days, approved GC in 70 days - Nov 23. B2 overstayed for 5 years
2. filed Oct 2023, crickets ( no EAD) adjust from EB-2
3. filed Oct 2023, crickets(no EAD) adjust from b2-asylum-removal proceeding terminated
4. filed Nov 2023, biometric Feb 2024 ( dont know why appointment it's late), 2 weeks later, Feb 2024 EAD produced - adjust from J1 overstayed for 4 years.
5. filed Jan 2024, crickets, no EAD even after biometric. adjust from B2 overstay 5 years
obviously the number is just an ongoing number, unrelated with approval.
but i noticed, the people ( that i helped) that adjust from B2 overstay, got their EAD/GC faster compare to people that has "past" immigration history. i.e : asylum, EB2 etc