(a) Payment made pursuant to this chapter in accordance with the type of account discharges the financial institution from all claims for amounts so paid, whether or not the payment is consistent with the beneficial ownership of the account as between parties, beneficiaries, or their successors. Payment may be made whether or not a party, beneficiary, or agent is disabled, incapacitated, or deceased when payment is requested, received, or made.
(b) Protection of a financial institution under this section does not affect the rights of parties in disputes between themselves or their successors concerning the beneficial ownership of sums on deposit in accounts or payments made from accounts.