The Church of England declared its independence from the Catholic Church at the time of the Elizabethan Religious Settlement. Many of the new Anglican formularies of the mid-16th century corresponded closely to those of contemporary Reformed tradition. These reforms were understood by one of those most responsible for them, the then Archbishop of Canterbury Thomas Cranmer, as navigating a middle way between two of the emerging Protestant traditions, namely Lutheranism and Calvinism. By the end of the century, the retention in Anglicanism of many traditional liturgical forms and of the episcopate was already seen as unacceptable by those promoting the most developed Protestant principles.

Answer this question, if possible (if impossible, reply "unanswerable"): What liturgical forms in Anglicanism were considered unacceptable by many progressive Protestants?
traditional