How do Reformed Anglicans stay in communion with, say, the Anglo-Catholics or with a diocese that allows gays to marry or become ministers? What is the Biblical ground for doing so?

Honest question...I'm not trolling.

__________________
J. M. Esq., P.V.P.M.P.C. [Perpetual Vice-President--Member Pickwick Club]
Baptist - Ontario, Canada - Feileadh Mor - An Orthodox Catechism