iPad HomeKit hub not seeing AppleTV HomeKit hub

I have two homekit hubs, original setup on my wife's ipad that has all switches and most of our smart accessories, video doorbell, etc. and an AppleTV homekit hub setup later that has homepod mini's for the TV setup. We would like to be able to have the video doorbell chime on the homepod minis, but I don't see them on my wife's ipad homekit setup as an option for the doorbell chime.

My wife's iPad is setup under her appleID and the appleTV likely under my id. We have family sharing setup for purchases etc. But guessing this may be the problem. However the AppleTV does see my wife's homekit hub on the iPad.

any ideas?