I posted a little thread about it on Twitter, so I'll link to it here. Easier to see the videos that way.
Kelly's "we gave them a heads up to watch out" spiel is a load of crap. Not only was Brown moving (something he's clearly coached to do by the way), but three of the back four are retreating prior to the ball being kicked. They weren't alert at all.
Link: https://twitter.com/greg2126/status/1178163248245329920?s=20
You should basically play on-side safe on every kickoff.
BK is a politician. He's going to make sure BK's ass is covered first and foremost. Many a player and coach has been thrown under the bus over the last 9 years in furtherance of this cause.
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Nice to see someone actually put a little thought into their issues with Kelly instead of, "Kelly sucks because I don't like him and you aren't changing my mind."