I think it all should center around the Captain until such time as the Captain relinquishes command, voluntarily or otherwise.
All info should be given to the Captain period.
Even in cases where hijackers were in the cockpit, not one captain has ever made a decision that cost an innocent life. Law enforcement does not have that track record.
IN the case of AA24, if law enforcement knew what they were doing, they would have started their search for people in the wheel-wells somewhere around the middle marker on approach.