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Today I have an installer coming to replace my 721 with a 722. It appears from the picture of the back of the 722 that like the 721 it requires to feeds into the receiver, but unlike the 721 will have one go out (to the 2nd TV). Does the 722 require that there be two separate input feeds or could they use one and add a separator? I'm asking because if they have to have two separate lines, the installer will need to run another line to the 2nd TV (I was hoping he could just run the return to the 2nd TV using the 2nd input to the 721 since where it is in the garage is on the same wall where the 2nd TV will be hooked up.
 
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