I guess this is what they meant by "interfaith dialogue" on dogma!
Postscript: David's comment led me to a bit of internet checking and this is what I found out about the "conflict" between the two churches.
Many thanks to one of my oldest friends - i.e. the friend I have known the longest not the oldest... oh hell you know what I mean - Vicki. Baci cara!
16 novembre - Santa Gertrude di Helfta detta La Grande