I know what you are talking about. Roman and Eastern Catholics have tried to create a partnership with the Orthodox for years now, but the Orthodox refuse the idea.
There is a reason why the Catholic Church is much larger than the Orthodox church. Catholics are more accepting. Orthodox on the other hand are not. They are all about enforcing laws and rules. They also think people need to starve themselves or they are a heretic that is going to hell.
I understand lent and fasting, but they think people should not eat meat, cheese, or use oil every single day during lent. If someone does, they think that person is going to burn in hell and they refuse to give them communion. Orthodox priests are known to refuse other Orthodox people communion just because they do not know who the person is (personally).