Anonymous C joined in and replied with this 6 years ago, 14 minutes later, 16 minutes after the original post[^][v]#1,036,900
Yeah, its etymology lies in splitting things apart. It's use as indicating joining two split things that you have split for the purpose of joining (i.e. film, DNA) is a little funny. The word "cleave" can mean to split apart or hold to firmly depending on context. English speakers really need to stop making words mean the opposite of their meaning.
Sheila LaBoof joined in and replied with this 6 years ago, 4 minutes later, 20 minutes after the original post[^][v]#1,036,904
cleave cloven
leave loven
Anonymous C replied with this 6 years ago, 13 minutes later, 34 minutes after the original post[^][v]#1,036,913