As jay_man2’s post indicates, the Streamer 2 itself is pretty easy to hook up and pair with your HA’s. What gets trickier is if you want to split the audio output from your TV. We have instructed our old TV to pass through the audio from HDMI input directly to its digital audio output, which used to go directly to our old Yamaha amplifier and speaker system. A powered TOSLINK splitter from Amazon allowed us to send the audio still to the amplifier and also to my streamer but there are all sorts of things about cabling and type of output from the TV that complicate things.
There’s a bunch of discussion on my own adventures from 2019 in the following thread: Does It Make Much Difference What Type of Audio Output Is Used for TV Streaming? - Analog vs. Coaxial vs. TOSLINK S/PDIF?.
I started knowing little about TOSLINK, etc., and still don’t know all that much, but, hey, it works GREAT!