A:AnswerNo. There is neither a built in SiriusXM tuner nor a SiriusXM streaming app. So, you would have to purchase a separate tuner or stream from your phone via Bluetooth, etc.
A:AnswerYou would not connect the antenna to the receiver. What you would do is set your system up with the TV as the center of your system. Connect the coax to the TV and then run a cable, such as optical or HDMI, outputting from your TV to an input on the receiver which will then output to your speakers. But remember that you will probably need to find the speaker setting on your TV and disable it or turn it off.
A:AnswerIf you have one of latest LG Tvs yes there is a optical input on the Onkyo receiver and the receiver can be connected through bluetooth; however I don't know if the surround sound will work through the bluebooth input.
A:AnswerYes, you can. I had, roughly, did the same thing by replacing my nine-year-old Onkyo model. However, I will be honest and let it be known that I have not yet used the Bluetooth feature of this model.