I'm confused on penalties carrying over to overtime period. (nf)

[kfo9494]

Sorry if this had already been asked and answered but I got confused the other day when we had a rules clinic and I thought I heard said 'no live ball foul will carry over to the overtime period'.
I must have misunderstood
case book 8-2-2 Situation C has penalties following a field goal starting the overtime period and fouls by the opponent of the scoring team , on a try, also going into overtime.
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So on the last play of the 4th, a live ball foul by the opponents of the scoring team can only be assessed on the try.
But if there is a live ball foul on the Try then it can carry into the overtime period.
I hope this is correct.