Thanks for sharing. My understanding: ...

The stage from “accommodative” to “neutral” means to delay the EXPECTED rising of inflation. So the FED will break the car once they see the red light but before getting there, i.e., they will raise the rate before the actual CPI reaching 2%.

The stage from “neutral” to “tightening” means tying to reduce the EXISTING high inflation. In this case, the FED will consecutively raise the rate to cool the overheated economy, which is often reflected by the high inflation or even the hyper-inflation.