Characters
Hey, I heard what you said, Doug, and I'm not gonna let you talk to Marcia like that.
— Charlie • The Brady Bunch Movie

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker makes clear that he heard the remark and objects to how Marcia is being addressed. Naming both people turns the objection into a direct intervention. Rather than commenting from a distance, he declares that he intends to challenge the behavior.
Context reviewed