Why? You have been lucky enough to find the TRUE Church, the oldest Church, the one established by the Apostles, the one Jesus said would never fall. The bus to salvation. Why keep quiet about it? We should proclaim it and share it with others.
It is an Airbus btw . . .
And why change your name, if it is a "Christian" name other than to LARP. Or if you are doing it under an act of obedience when becoming a monastic to show you are dying to the world.
The answer: none. Really I don't want to hear the "spiritual" connection stuff.
We Preach Christ crucified not the perpetual virginity of the Theotokos, icons, monasticism, etc.
Christ crucified. The rest is part of the life of the Church. They ain't in it. No need to bring it up, especially if you think it will sow division.
If they ask about more, invite them to Great Vespers.
Getting roped into the these "discussions" is rarely profitable. I only discuss such stuff here and with other Orthodox in RL.
The rest of the time, I just invite folks to stop by at 6 PM on a Saturday evening and offer to discuss whatever questions they might have afterward to the degree I can.
Triumphalism sounds all fine and dandy maybe, but it is really a bore. Acknowledging what is held in common and extending an invitation to come and see is more much profitable IMHO.