I got caught by this. Did extension end of May. Passport expires end of February. They only gave extension to February. I could have renewed passport but it was only three weeks to go until visa extension expired so I just took the hit and will have to extend visa in February with new passport.
I’ve done many visas at the NY consulate. No appointment needed, but you have to drop off your application and paperwork in the morning. They will give you a receipt and tell you to come back the following afternoon to pick it up. Very efficient.