His perspective
When the Fight Gets Too Hot and He Goes Quiet
In the heat of this fight, he may be too flooded to answer usefully. A real pause includes a return.
The argument speeds up. His answers get shorter, then stop. You need acknowledgement now; he looks less capable of giving it with every new sentence.
This is one overheated moment—not his general temperament and not a days-long cold silence. His body may be treating the conversation as threat: narrowed attention, lost words, rising heat and an urge to escape before he says something worse.
A pause is a structure, not a disappearance
“I cannot answer well right now. I will come back at 8:30, and we will start with the part that hurt you.”
The time needs to be believable and kept. You can stop pressing without agreeing that the issue is over. He gets room to come down; you get evidence that quiet is not the end of repair.
Know the line
A break with return can protect the conversation. Silence used to punish, frighten or force you to give up is something else. Neither person has to remain in threats or humiliation and call it a timing difference.