Our guys need to learn how to flail their arms and yell "HEEEYYYY HOOOOLLD!!!!" when that happens. Anree in particular. Ref might not call it the first time they do it, but they will sure pay attention, and the OL will be less inclined to pull something like that again. That was textbook holding outside the scrum of the interior line. When you spin a defender from behind 180 degrees, something not natural is going on.
Branch got tackled, but in his case the OL was a little savvy in that he held from the shoulders in (which a lot of OL do) and never put his hands outside the shoulder. On replay it looks horrible on the OL, but in real time it's so hard to call that one because it kinda looks like Branch is getting pancaked. Gotta remember, each ref is assigned a particular area to focus on...almost impossible to catch everything in a scrum like that. It wasn't as flat out blatant as what happened to Anree. In this instance, the OL was just good at using "the tricks of the trade" that OLs are taught. If anything, Branch should have used his hands better to disengage the inside jersey hold and if the OL was still holding, the fistfull of jersey would have shifted to the outside and the only way the OL would have held on would have been to noticeably stretch the jersey.