Offense dictates tempo, bc they snap the ball. You never see the defense in “hurry up”. They are setting they’re defensive calls based on what the offense is doing. It’s why you get unbalanced teams, (read: great offense/bad defense) lose.
I could list quite a few teams, but if you can’t run the ball, your Defense suffers.
You’re not wrong, in the sense anytime you’re not in the field, you’re “resting”. But offense sets the tempo.
I could be misreading your question, but I believe in your case, the announcers were referring to the defense *of the same team of that offense that was out there for 10 minutes*.
As others have said, playing defense in football is exhausting because you’re constantly having the react at full speed and power.
So, if Team A’s offense is out there for 10 minutes (practically an eternity in football), then at the same time Team A’s defense is resting for a long 10 minutes to catch their breath and get fresh, while Team B’s defense is out there defending for a long 10 minutes, getting exhausted (and probably even more so if Team A’s offense is running the ball…that especially exhausts a defense because it’s usually man vs man physical battles).
Hopefully I answered it and didn’t repeat anyone and/or misunderstand you.
People have, rightly, pointed out that the defense exerts more energy than the offense. But a major piece that I don’t see being mentioned is that when players get tired, they sub out. That happens on offense and defense. But the one player who almost never comes out is the quarterback. The (usually) most important player. So that alone makes rest more important for the defense than the offense.
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