Basically we dumped a ton of volume into the vaccination funnel from the get go (because we were vaccinating such a wide range of people so early on because of the employment based qualification criteria) so while there was a backup we were always running the "actually vaccinating people" part of the system at full tilt. Other states poured a comparative trickle into the funnel. While there was no backup up top you didn't have the bottom of the vaccine pipeline running at 100%.