This show is so super complicated sometimes that it's hard not to jump to the conclusion that certain characters are related... there's always potential there with all those insane character connections that currently exist but I'm still on the fence in this case. It's more likely to me that Mrs. Hawking may be related to Daniel, but if in the end Miles does have some odd connection to Candlewick-Halliwax-Chang-Whatever then I can't really say I'd be surprised.
It goes back to the whole daddy-issues philosophical debate. Are we (or the characters on the show) a product of our fathers (or mothers)? If so, does Miles special ability revolve around the possibility of him being Chang's son?