Your airline has a training dept with people who are in charge of this stuff. The training department has a direct link to the FAA via the POI, and they have agreed on how to tailor the training curriculum to comply with the law.

These people are paid to do this stuff. They've spent many hours organizing it.

Yet, you "heard" something and may be making the decision to go spend a couple thousand bucks based on what somebody told you on the internet, instead of official company information.