Using thisconstruction, you can even make a trickysentence in which the first clause expresses an early action in Simple Past. Then ,a second clauseexpresses a later action inPast Perfect to indicate continued effect (by a still later past time)
Right: Theband U2 WAS just one of many new groupson the rock music scene in the early 1980’s, but less than ten years later, U2 HAD fully ECLIPSED its early rivals in the pantheon of popular music.