Sharing among smart TVs

We’re using a 75" Sony 4K smart TV with YouTube live TV service; Netflix, HBO, and HULU streaming services. The TV is seen as a another computer by our iMac. Saturday we will be installing an 85" version of the Sony in another room. Given they will be on the same WiFi network, can the two TVs share information about the services we have or will we need to register with each service again? And if they can share, is there anything I need to do to make it happen?

eARC from the Sony will go to a Bryston SP3 processor via HDMI. Sony tech claims that will work although the SP3 predates eARC. Video for Blue-ray will go from an Ayre DX-5 DSD to the Sony via HDMI, with surround audio to the SP3.

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if you have an Google account have your phone handy and it will walk you through a pretty painless setup of your apps your already signed into.