I ended up here after watching a video that Chanyeol's been ignoring kyungsoo in this particular production. After their concert in Japan all the members get back except kyungsoo who stayed in Japan and joined the In Song travelling buddies and Chanyeol's upset. He was still in Japan when they rehearsals occurred. Chanyeol in his IG post was very reveling that he was upset and jealous. Now I know why. Come event time it was so sad to watch kyungsoo being ignored by Chanyeol 😢😢😢 there was a moment where Chan wanted to hold soo but held back. It was out of habit that he did that as Chan always tease soo 😢😢😢
I believe it’s for the cameraman so he knows who to look when it’s actually being recorded. I’ve seen this often while watching practice videos. And also for cameramen who aren’t accustomed to who sings what part.