Dear brother Bob,
There were many theologically open-minded persons on both sides in the second millennium, which resulted in temporary reunions between the CC and the OOC's. One I am most particularly fond of (as a Copt) was the official intercommunion that occurred between the Latin missionary church in Egypt and the COC for about 100 years in the 17th-18th centuries (unfortunately, the situation was officially ended by the Roman Pope).
Actually, the main reason reunions did not last was not Christological or theological (e.g., among other things,
filioque was never an issue with the OOC's). Rather, it was mostly because of differences in discipline and praxis (i.e., the OO strongly opposed the Latinizations imposed upon them). A good example of an ideal reunion was the intercommunion between the Latin missionaries and the COC in Egypt already mentioned. Both camps respected each others' Traditions during that time and in that place, and PEACE ENSUED!
Blessings,
Marduk
It is best to refer to their final documents for this and not rely on simple, silly me!
(Are you mad at me? )
Alex
No.

I'm just trying to understand this. Too bad that people with better understandings of language hadn't been along those 1800 years ago and we might not have had to endure this separation for so long.
Bob