Also, overall penalties is not going to give you a good indicator of whether there is a trend or not. That is not going to tell you anything regarding the impact as far as the games are concerned. Last year, Arizona led the league in penalties called by a large margin. In 2019, it was Tampa Bay by a large margin. 2018 it was KC and we weren’t even close to the top. 2017 we were close to bottom of the league and 2016, we were middle of the pack while Oakland was top by far.
The better stats would be to look at a by-game basis.
Dallas could just be involved in games where the penalty counts are high this year, meaning the officiating crews they are playing with have a tendency to call more penalties.