Sentence Correction

Usually incase you have a past tense as well past perfect in a sentence -
past tense -> refers to actions at later point of time
past perfect --> refers to actions at earlier point of time

However in the below question it is not so ?

The band U2 was just one of the many new groups on the rock musis scene in the early 80s, but less than ten years later, U2 had fully eclipsed its early rivals in the pantheon of popular music."


past tense (WAS) --> Happens at a earlier point of time
past perfect (HAD ECLIPSED)-->Happens at a later point of time

This example is from MGMAT SC guide, for one of the most detailed explanation on this one, read atulmangal's explanation here:

https://www.beatthegmat.com/mgmt-verb-te ... tml#376310

good ref!