It looks like Benedict XVI is an ecumenicist when we read this paragraph from his address to Scottish Catholics:
"Much has happened in Scotland and in the Church in this country since that historic visit. I note with great satisfaction how Pope John Paul’s call to you to walk hand in hand with your fellow Christians has led to greater trust and friendship with the members of the Church of Scotland, the Scottish Episcopal Church and others. Let me encourage you to continue to pray and work with them in building a brighter future for Scotland based upon our common Christian heritage. In today’s first reading we heard Saint Paul appeal to the Romans to acknowledge that, as members of Christ’s body, we belong to each other (cf. Rom 12:5) and to live in respect and mutual love. In that spirit I greet the ecumenical representatives who honour us by their presence. This year marks the 450th anniversary of the Reformation Parliament, but also the 100th anniversary of the World Missionary Conference in Edinburgh, which is widely acknowledged to mark the birth of the modern ecumenical movement. Let us give thanks to God for the promise which ecumenical understanding and cooperation represents for a united witness to the saving truth of God’s word in today’s rapidly changing society. Among the differing gifts which Saint Paul lists for the building up of the Church is that of teaching (cf. Rom 12:7)."
His whole address is here.