It seems to be a tradition. The day of Saint Denis of Paris, Orthodox celebrate Orthodx vespers at Paris' cathedral Notre Dame. This began three years ago and will take place this year next October 16th at 6 p.m.
Last year were present Metropolitans Emmanuel (Greek) and Josif (Romanian) and priest and deacons of many jurisdictions... And the deacon (Moscow Patriarchate) commemorate the Catholic archbishop of Paris (Prions pour Jean-Marie, archevêque de Paris). At the end, Metropolitan Emmanuel and the Catholic bishop exchanged warm words about the "Good relations...", "Branches of christianity..." bla bla bla and the Greek bishop offered his catholic "friend" a chalice regretting we cannot already commune at the same chalice... And the public both Catholic and Orthodc applauded...
I noticed this time that all Orthodoc official jurisdiction sent delegates (priests or deacon) excepted the Serbian church...
Esthetivally speaking it was real mess : the altar of Notre Dame is a post-modern style altar really ugly... At the left of the altar, the icon of the Trinity by Rublev was put... I do not know why... It was more easy to put the icon of the Thetokos and at the right the icon of the Savior...
So during the ecteny dedicated to the Theotokos, we could see the Orthodox deacon looking at the right whereas traditionnaly he looks at his left. Why? Because int a wall, at the right there is a statue of the Theotokos... The choir sang in Byzantine and russian ways (in French, Greek...)
So I will inform you about this ecumenical show this year : which gift etc, which participants... which speeches...