So I downloaded the episode to rewatch it instead of using HBO Go again, and I just caught something very interesting.
At 29:18, during the wedding, the Pastor says, "Cursed be he who seeks to tear them asunder." He is referring to Joffrey and the Queen. The camera pulls focus and this is what you see.
VERY INTERESTING
Edit: I rewatched, Pycelle wasn't talking in Oberin's ear, but I think there is significance to he and Olenna stand out during when this line is said.