Anon #411547 here.
Exactly, devsfan. Since an authorized signer is not defined as an "owner" of the account, there is no legal requirement to obtain info. So, as in the case with my bank, we have it written into our CIP policy that "beneficiaries, auth.signers" are excluded. I'm not saying I agree with that decision, but that's what the "powers that be" decided upon.