The Mythic World and the Prosaic Reality are the same; what you do in one, 
you do to another. If you talk to a building, you're talking to a building 
in both worlds. This means that if you do this in a public and populated 
space, ordinary people will think you are crazed, and act appropriately.


Communicating telepathically with your Familia is a Realm Divination, 
unless you have Realm 2 and they have Realm 2. You can get a sense of 
their state even if they don't have Realm 2.


Realm miracles only work on something that is part of your Realm. If a 
person, that person must eat and drink from your Realm. If an object, it 
must exist in your Realm for at least 24 hours before taking on the 
essence of the Realm. Realm miracles work on something of your Realm out 
of your Realm as well; you can spend 1 realm point per day to extend the 
period of time that objects of your Realm maintain their Realm citizenship 
and Realm properties (such as magic) outside the Realm.


Nobles aren't immortal unless they buy Eternal. The lifespan of a Noble is 
based on their gifts and Aspect. Aspect 0 equates to a lifespan of about 
100 years; each level of Aspect adds 50 years to that, and Immutable 
doubles or triples that.


Prayer is a means of communication between Nobles, but it's not a reliable
one, because Nobles don't know who is praying to them until they pick up
on their end, and they get a lot of calls (though it does depend some on
the Estate). It's like a cross between getting lots of telemarketing calls
and not having Caller ID, and email, because it's not a 2-way
communication.

How do most powers communicate with each other if they're not members of 
the same chancel? That's what Earth is for, and cellphones, and message 
services, and email, and secretaries and so forth.