Indeed. It's not rocket surgery. Personally, I wouldn't even wait until match day. I'd get all the parts (I was going to say players, but that could be ambiguous) at the stadium including a person sitting in AOC's seat. Get a video and audio feed from the pitch - from the actual suppliers. Have a random person standing in the centre circle and get them to clap their hands. Get AOC to say "clap" when he sees the person clapping their hands. Analyse the hell out of the result. Don't need a match taking place. Don't need players. Don't need a crowd. And it's repeatable until you find the issue. Then fix it.Maybe they could try watching the stream on match day. I’m sure they (SwansTV, audio team, external audio team and any other team they pass it onto next) must have a test account with access to the stream to recreate the issue and troubleshoot (standard stuff really).
Makes you wonder how Sky do it though.