No problem. And that is great to hear about your friend tbh. I'm guessing he is likely part of the eastern orthodox church be it Greek, Serb, Russian, Armenian, etc. He is likely saying the same things because our beliefs ARE the church's beliefs because we are one in Christ through the Church he founded.
Expecting even a seasoned priest to know all 2000 years of Canon law is unrealistic so we have the words, teachings, and lives of not only Christ but our holy fathers as a resource to answer these sort of questions, hence "Canon Law" i.e "a general law, rule, principle, or
criterion by which something is
judged."
As orthodox christians we all share a singular creed that is chanted regularly. Maybe you should consider attending a liturgy with him. As St. Andrew the first called apostle said "Come and see". I would guess you would demur but what really, do you have to lose?