Silas certainly seems to believe the issue resolved, past the catch of friction to a pause before he lifts the cup to drink from it -- as if he’s sensed he’s missed something, but isn’t sure what. It hasn’t occurred to him that there might be another reason for him to punch a knife through Ellis’ jugular, beyond his previous expression of disappointment over his ongoing existence.

An exchange he was asked to forget about.

He must feel very strongly to have brought it up again on his own.

“Mm,” he says, instead of you’re welcome. And at least in clear part due to the wine being better than he expected. “I’d have mentioned it before, but it's never seemed important.”