The order matters considerably more than the effort, and two of the steps take under a minute each. Almost all of the eventual cost is set before lunchtime.
Several different deadlines run at once in any disagreement, set by different people for different reasons, and the earliest one is usually the least advertised.
An adjuster applies a policy to a set of facts. Most claim disputes come down to whose description of those facts was written down first and in more detail.
The difference between records that make a return straightforward and records that cost a weekend is not effort. It is entirely a question of when the effort happens.
A visit, the published outcome numbers, and a current student are each reliable for something and misleading for everything else. The skill is matching them to questions.