I hope this make's it clearer.
Not really.
So, let's try to lay it out and you indicate whether this is right or not:
1) There was an insurance policy where Brother 1 was the insured and Brother 2 was the beneficiary.
2) Brother 1 passed away. Brother 2 either was not aware of the policy or did not make a claim with the life insurance company before Brother 2 passed away - 4 months after Brother 1.
3) Brother 2 has a will that names you and your wife as the beneficiaries of his estate.
Unless there was some clause in the insurance contract that Brother 2 had to survive Brother 1 for a certain period of time in order to receive the policy's proceeds, the administrator of Brother 2's estate should make the claim with the insurance company and the proceeds should be payable to Brother 2's estate where they will be subject to claims made by Brother 2's creditors.