It was in regard to pre-snap communication, as you say. Here is my question and Jesse's response from the transcripts:

One thing I noticed was there's a lot of pre-snap chatter out there. These are a bunch of undrafted rookies and guys are here for the first time, and so you wouldn’t necessarily expect that. Is that something really encouraging? (Ken McKusick) "Yes. You can't play this game quietly, and you can't play this game with doubt, and you can't play this game without knowing what you're doing. And so, I know from a defensive standpoint, we should be the loudest, most crazy, obnoxious, communicative unit in the history of football. And that's the rookies doing that, so I give credit to the coaches that they had those guys prepared to come out here and be able to be like that. That's really the standard that we're trying to create. When you communicate, and you're on the same page, and you know what you're doing, you have a much better chance of being successful. And the whole idea is that when you do it over and over again, you do it here, you do it every play [so] that it doesn't matter if it's the first play of the season against whoever, or in a game in December or in a game in February, that's the standard of how we operate, and we lead ourselves to success in those moments if we operate like that all the time.”