Most TVs do not output sound thru HDMI.
If your TV is just a monitor (that is, you feed it thru set-top box like Dish/DirectTV/etc), run the STB into Bose, and from there into TV
If your user your TV with aerial - check to see whether you can get optical out from TV -> optical in to BOSE
Last compromise - headphone out from TV -> AUX in to BOSE