What is the difference between Consolidation and Linking of KPIs?

The explanation for this question is quite simple. In the summation there is a function being applied in the calculation of the result and in the linking there is only a link between the main and linked indicators, making it easier to see only the linked indicators.

In the dashboard we can differentiate these two functionalities with two icons that are used.

In the consolidation we will see that there is the following symbol:

In Linked kpis we will see that the following symbol exists: