Yeah, but it's not an obscure detail that you'd have to calculate like the amount of stars you gain during the combo, or something critical you need to know to do the combo like how many stars you need. It wouldn't hurt to have it in there though, just as general knowledge, but I figured anyone practicing the combos would get a feel for the distance as they're learning it.
But it's still important to note things like corner combos, or midscreen combos and carry combos. You just don't need to break it down to a ridiculous level like how many hops it would take.