The visit is a good start. We do need to remember that the majority Orthodox church is in Russia, not Turkey. That one will be more difficult.
Just looking at raw numbers, there are about 100 million Russian Orthodox and about 15 million Greek Orthodox (as in Eastern Orthodox under the Ecumenical Patriarchate of Constantinople.
Now, the possibility of an ecumenical visit between Pope Leo XIV & Patriarch Kirill is not impossible, but it is difficult. First, is how to actually sway the Russian Orthodox Church to have ecumenical talks with the Catholics.
The Holy See seems to prefer to talk to the Greek Orthodox Church, which is not in full communion with the Russian Orthodox Church. This could become a kind of "conflict of interest" as if the Holy See reaches out to one of the two churches, the other could distrust the Holy See. Not to mention, the ROC's "Ukraine Problem". The ROC, being Russian, is more supportive of Russia's actions in Ukraine, considering it more as a "just war". The Catholic Church, and the Greek Orthodox Church, are against the war.
Then you'd have other problems that I can't list right now, but they exist.
It is pretty hard to talk to the Russian Orthodox right now, but I pray it will happen.
