The feeling is mutual. On some level, even now as he's basically being tortured, there's the macho part of him that wants to tough it out simply to prove he can. But the more human part of him would be grateful if he could just not deal with it even if it was weak as hell to pass out.

Unfortunately for the both of them he doesn't. Later, much much later, Kabal will appreciate the fact that Len straight up ignored his screaming and writhing. Because if it's not commented on they can pretend it didn't happen. The last thing Kabal wants is to be babied, asked if he's okay as if he's too weak to continue. No, he wants to be treated with the same gruffness he reciprocates.

He is weakening though, bloodloss, pain, the energy needed to scream and thrash while mentally being aware enough to not rip his arm out of Len's grasp, he can't maintain that forever. Kabal has never been more thankful for the mask so that Len can't actually see him panting and wide-eyed with pain. They can both pretend it's not happening when Kabal all but collapses as Len eventually releases his arm, tilting it so he can see the bloody pulp of his arm, skin glistening pink and absolutely disgusting.

The important thing is that his arm in agony means it's not rotting off and, ultimately more important: he didn't cry. Though he might have felt better if he had.

"Let's never do that again." He sounds utterly spent, like if he has to do any more screaming he might wither away. "What are you into?"

Distract him from the throbbing mess of his arm so he can think of literally anything else.