A:Answer My understanding is only the two will work as rears. They are dedicated rear speakers, and the soundbar is "simulated" Atmos, so it is only a 5.1 set up as far as I know. I didn't see anything in the documentation about adding more, I just know it is not a true 7.1 set up. My speakers are about 16' from the TV/Soundbar and connect just fine, but I didn't see anything about the maximum range. I think there are so many factors in Wi-Fi reliability, like interference, that it would vary based on the situation. However, I believe there is an interference setting in Advanced features that defaults to "on" that people have had success with turning off, when there were issues.