[ Yes and no gets a raised eyebrow from Claude until the explanation follows. So it's not merely because of the Trials as that exists for others - nor is a long life a given past what a Witcher's already lived - and he offers a short hum in response while considering this. There's more coming together in call backs to that first conversation they'd ever had, he's pretty sure, and if that's the case: much about Geralt's reactions to what he'd shared make even more sense now. ]

Humans have a rather average lifespan back in Fodlan. If anyone lived longer lives than that, none of us were aware until recently.

[ Though - that makes it sound like it's widely known, and that's not exactly the case. He's fairly certain Sylvain has no idea, and Hilda... well, Hilda will also know someday but thanks to all those timeline complications, she doesn't know that now. Better to shift the topic to something adjacent even if he's not really answered anything about what he meant by that statement of recently. ]

The Crests I mentioned briefly back on the mountain - they come with all kinds of effects depending on the one it is, but none of them grant long life as far as I know. They're passed down through bloodlines and came from blood back at the start of them. Mine's supposed to heal me if I'm injured, but. As you saw, sometimes it does what it wants.