#1 issue here is that you think you can hook the optical out of the TV into the Connect. The current Connect has no optical INPUT. You would have to hook the connect to analog out from TV (some TVs have some don't - some have to hook direct to cable box analog outs).
You are going to have a 70ms delay caused by this. I don't find it distracting as long as the TV speakers are turned down. You can hook your soundbar up to the connect via optical but it will only be stereo not surround.
I think you would be much better off getting a Sonos Beam that is meant for this and re-purpose your current Soundbar.
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