It was a drizzling, so didn't get to stand at the skydeck. Personally it quite waste of time to just be at the observation deck as I'm not interested to visit skydeck.
Go all the way, yes, for Malaysian prices it's more than usual, but worth it. Great views, and you get some great photos in the sky box which is glass! Would recommend!
This is the structure that connects the two buildings that make up two towers of Petronas Towers building. Odd that it's listed as a separate attraction though. I visited back in Feb before everything shut down and got to walk across it as part of the tour. From the bridge you can't see much of the two buildings, but you can look down and see KLCC Park, which is pretty cool. Its also a great place to take some photos.