See I don't even disagree on Kaliyev, they got that one right.
But Mahura has no business even facing Kaliyev there. The puck was long gone, he was obviously upset/premeditated after getting dumped and then embarassed after losing the puck battle, and drove his stick up through Kaliyev's face. It wasn't 'incidental' or a 'battle' or whatever narrative, he's not just checking Kaliyev off the puck and "oops it rode up," he's facing Kaliyev solely to pop him in the jaw and then turns tail and runs.
I'm glad Kaliyev popped him just as I am glad Beagle wrecked Terry and Zegras will get his too, these f***ing kids are running around unaccountable and TZ in particular is letting everyone fight his battles for him, even Getzlaf came to Mahura's rescue here, make no mistake Mahura knew what he was doing. I'm glad to know that even without Lemieux there (and you'd better believe the Ducks noted that) that Arthur was comfortable enough saying f*** you, no you don't get away with that, and that Byfield didn't even flinch about grabbing Getzlaf. That's honestly gigantic progress imo.