The two church leaders want to promote togetherness between Catholics and Anglicans, but their own churches are bitterly divided.
The role of religion in marriage has been distorted, helping the 'no' case for same-sex marriage to attract more attention than it deserves.
The Anglican church has been criticised for standing against gay marriage, but it has taken a positive step on an issue that many activists see as more important.
Feminists played a major part in raising the profile of women in the church. Now they need to step up for same-sex marriage.
In an attempt to avoid complete meltdown, the Anglican Church has sanctioned its US branch for backing same-sex marriage.
Sexuality is proving a destructive issue for the church.
The church is too diverse to be governed from Canterbury and should agree to disagree on issues such as women priests and bishops and sexuality.