[That's an odd apology, and D'Artagnan furrows his eyebrows, the twist to his mouth minutely sceptical and mostly judging.]

I've no quarrel with you rejecting my opinions. You need not apologise for it.

[Charles will reap the consequences for that on his own, for not listening to anything D'Artagnan may have to say on the gangs, and that is a satisfactory end for the slight of ignoring him. He sighs. A short irritable noise, regarding Charles's further comments on that.]

I was unaware we'd needed working anything out. You understand we're barely acquaintances, do you not?

[This is not a friendship in need of tending to, there's been little established as far as D'Artagnan is concerned.]