He wasn't being subtle.

'Kill him? He's not worth my effort to kill. And I'm pretty sure there'd be easier ways to do it.'

He needs to investigate the old myth of staking one through the heart, but even if that doesn't turn out to be true, he's pretty sure nothing can survive having their head cut off.

'If I were trying to kill him, I'd hardly bring you into it, would I? Not now you're fucking him.'