The break with Rome in England was complex and initially was schismatic and not heretical. Whatever Henry VIII's faults he was not a protestant unlike Cranmer and Henry's daughter, Elizabeth I.I know. Henry appointed Protestant-minded clergy who would do his bidding and when he needed Protestant allies in Europe but they couldn't practice their Protestantism. Anglicanism didn't really become Protestant until Henry died and Protestant regents ruled for his underage son, Edward VI. I lived in England nearly 30 years ago; largely anti-religious but if you're a believing Catholic it's obvious it was once ours.
Just now a High Church clergyman called to be bishop of Sheffield has had to resign because he has received so much hatemail from the liberal, woman-priesty side of the Church of England. They loathe the High Church wing so much.Has he? I used to slightly know him; all I can say is "wish you were Catholic."
There's conservative high church and liberal high church in the Church of England and Episcopal Church. Conservative high church has existed for many years thanks to semi-congregationalism but obviously has no future in those churches and anyway doesn't make sense; doctrinally you are who you are in communion with. (Sometimes it's would-be Roman Catholicism; sometimes it's a rival Catholicism.) Liberal high church is virtually unknown to Roman Catholics; it's not like Catholic liberals. In Anglicanism you can find clergy who are lesbians but believe the creeds and love medieval liturgy. This alterna-Catholicism is becoming a house style of Episcopalianism, formerly the Sunday holding pen for religiously indifferent preppies and/or Masons.
It's not the church but I get it.
The trouble with gestures such as lending St. Peter's in the Vatican to the Anglicans for Evensong (a fine service; culturally it beats most of the Novus Ordo parishes) is they see it as validation for remaining outside the church. What have 50 years of these gestures really done? They keep moving away from us.