[Welpe]

Originally Posted by bniu

Defense was offside, offense commits holding, defense commits pass interference. Two penalties against the defense, one against the offense. Does this still offset?

Yes they do. Live ball fouls by both teams without a change of possession will offset.

Another question, offense commits holding, throws an interception, defense returns the ball, illegal block in the back on the return, defense fumbles the ball, offense recovers the fumble, starts to advance it and commits another holding foul. What's the ruling here?

The fouls will offset and the down will be replayed.