Nope. First of all, halos aren’t under your chin. They’re above your head.
Secondly, this pair of cats are Slim and Spot. The likelihood of them ever having halos is – well, let’s just say the odds are heavily against that probability.
Sorry, you two. Nice try, though.
You can always tell a halo cat, you can tell by the shine of their coat. (A stretch, I know.)