Like how accolade correlates with kwel?

The other thing to remember about many Latin-derived words is that one needs to unpack them by removing any affixes to see the root: Vulgar Latin *acccolō, acccolāre, 'to embrace' < Latin ad- 'to' (related to English at) + collum 'neck' (< PIE *kwel-). Also, not all initial PIE *kw- > Latin co-: there's all those pronouns, e.g., quis 'who', quod 'what', etc.

Ceci n'est pas un seing.