Linked test & Advancement

Simple question. Do all test from a Linked test count toward Advancement? Or it is a “Series of Rolls = One Test”?

Thanks in advance.

Generally, you’re going to be either testing different skills, if it’s one character making a series of linked tests, or different characters linking to a single future test. Either way, they should count for advancement. The Series of Rolls rule is for if one character is testing the same skill multiple times, like in Fight or DoW.