It was said at a recent practice where some Dag fighters were on the field a difference between Dag and Bel is that Dag players can utilize their shields to edge an opponent. That is not edge an opponent's shield or weapon, but their actual person. For example throwing an edge into a fighter's weapon arm was a legit way block a swing and/or prevent them from being able to deliver a hit with sufficient force until they got their limb clear enough to deliver a proper swing was said to be more than acceptable in Dag but against the rules in Bel.
Was I mistaken in my impression this was actually allowed in Bel? I'm not sure why I thought shield-on-fighter contact was ok, but if it's not I'd really like to know so I will avoid doing it once I get straps on my shield instead of my slippery punch grip that makes edging nearly impossible to pull off without rotating my own shield way out of position.