What does "in communion" mean when the Bishop is prepared to tolerate anti-rubrical practice?
Suppose a Bishop (a real Bishop, such as the Bishop of Arundel and Brighton, for example) assents to a form of celebration of Mass on the feast of Christ the King which drives a coach and horses through the rubrics? Am I "in communion" with him?
Suppose another Bishop encourages (not in writing, or in any way that might form the basis of a complaint to Rome) his Parish Priests only to allow women to be extraordinary ministers, and encourages them not just to allow these women to purify the sacred vessels after Holy Communion, but specifically not to do so himself. Am I "in communion" with him?
What does one do if the Head of one's Church appears not to believe in what Catholics believe, and him obliged to uphold it?