There are a lot of suppositions loosely glued together here. The count being off happens sometimes and may not have had anything to do with you. I’ve had it hap

There are a lot of suppositions loosely glued together here. The count being off happens sometimes and may not have had anything to do with you. I’ve had it happen several times when traveling. Flight attendants need to adjust airflow when the plane will be sitting on the tarmac longer than expected. On older aircraft those little nozzles are the only way they can control cabin temp while on the ground. They keep an eye on cabin temp readout and adjust nozzles to change it. Again, I’ve had attendants reach in and adjust (usually open) nozzles when we’re stuck on the ground.