Looks like the barriers between concelebration are breaking down almost everywhere except among some hardliners in the USA:
Concelebration in Ireland:
Possibly the first ROCA-Ecumenical Patriarchate Liturgy since 1968?
The road to the resumption of liturgical unity seems to have opened in
Ireland.
http://www.orthodoxireland.com/Members/FrGeoffrey/News_Item.2003-08-26.2508Orthodox Christians in Ireland were blessed this past weekend by the visit
of the wonder-working Kursk Root Ikon of the Theotokos.
The ancient ikon, whose remarkable history has been intertwined with that of
Russian Orthodox Christians for seven centuries, visited Orthodox churches
in Dublin and Belfast.
On Friday evening, Father Vadim Zakrevsky of the Russian Orthodox Cathedral
of the Dormition (ROCOR) in London brought the ikon to the newly-established
Russian Orthodox Church of St Peter and St Paul in Dublin (ROC-MP), where a
Moleben and Akathist were served. In attendance were Father George
Zavershinsky, rector of St Peter and St Paul church, as well as Archbishop
Anatoly of Kerch (ROC-Sourozh Diocese).
Father Vadim then travelled to Belfast on Saturday morning to celebrate the
Divine Liturgy with Father Geoffrey Ready at Holy Trinity Orthodox Church, a
small English-language mission parish (ROCOR).
On Saturday afternoon and Sunday morning, the ikon returned to Dublin to
Annunciation Greek Orthodox Church (Greek Archdiocese of Thyateira), where
many hundreds of faithful gathered to worship together and venerate the holy
ikon. The Sunday Liturgy was concelebrated by Father Ireneu Craciun, rector
of Annunciation church, Father Vadim and Father Geoffrey. Also serving was
Father Deacon Christian Gheorghiu of Annunciation church.
In his sermon, Father Vadim reminded the gathered faithful that the proper
response to the tremendous blessing which the Lord bestows upon His people
is a life of spiritual struggle, prayer and fasting -- fasting not only from
food at appointed times, but fasting at all times from sin, from temptation,
from all that prevents us from honouring and worshipping God in company with
the Holy Theotokos and all the saints.
Speaking after the Divine Liturgy, Father Ireneu recalled the ikon's first
visit to the Dublin in July 1993, when the church was going through a period
of crisis. The community was homeless, having been evicted from the rented
premises they had used for a number of years. The visit of the holy ikon had
brought much comfort in the midst of this distress, and within a month of
the ikon's visit, the current church property had been miraculously found.
In his remarks, Father Geoffrey reflected on the significance that this Holy
Liturgy and visit of the Kursk Root ikon fell between the New and Old
Calendar celebrations of the Feast of the Dormition of the Theotokos. He
recalled that, on the eve of the falling asleep of the Virgin Mary, the
Apostles who had spread out to all corners of the inhabited world to spread
the Gospel were miraculously brought together in one place. Father Geoffrey
gave thanks to God for a similar gathering of Orthodox Christians from all
parts of Ireland and beyond, from different churches and different
nationalities, coming together to worship in true unity, sharing One Body
and One Cup. He expressed his hope that this Orthodox unity in Ireland would
be the lasting legacy of the ikon's visit.
Following the Divine Liturgy, Father Vadim returned to London where the ikon
will remain for the Feast of the Dormition. Archbishop Mark will then return
with the ikon to New York later in the week.