I *believe* though I do not *know* that God hears all of our prayers. He is the Creator of us all, not just the Orthodox or the Catholics or the Baptists or the Muslims or whoever. And as such, because He is a loving God, He loves *all* of us, no matter what we do or do not do, no matter where we worship Him or do not worship Him. Really, how could it be otherwise?
And if we do not worship Him in a way that He would prefer, could He love us less? If so, how?? He doesn't want us to sin, but still loves us in spite of our sins, does He not? I think that anyone who might claim otherwise is missing the point that God is Love.
How many of any of us really have "proper understanding", anyway?
Heck, as far as worship is concerned, Roman Catholics actually welcome Orthodox Christians to worship with them *and* partake of the sacraments. I know, I know--we Orthodox, in our "infinite wisdom" (HA!) do not reciprocate in the partaking of the sacraments part, even though I am told by Orthodox priests that Catholic sacraments are "valid". Now, that's interesting! Wonder what God thinks of that?