Many theories...but often it's speculated that the team due to lack of depth wears down towards the end of seasons.
That makes sense.
If I had the time- I'd watch the last three seasons worth of December games in comparison to their November games and see-
We're they running ragged? Or is it something else....
Nobody has said for sure- so I'm assuming nobody is sure.
I keep harping on watching video in many of my posts- looking for specific things.
I ask for pro's to do so, I wish I could do so, do you think anybody does so?
You think the Cowboys do that?
Film review can show many things, but nobody has a definitive answer for these recurring issues.
Man- if only I was rich and had tons of disposable time...
Nah- I still probably wouldn't spend it watching Cowboys film. I'd be trying to fly a Skyrunner- with a head full of... exotic substances. Then land it in some friend's backyard. Just to say: Hey- like the landing? Peace.
Then take off and land at the nearest bar with several good screens showing multiple games and a lively crowd.
I can call a taxi from there.