Doesn't Miracle count as a battle skill? I read from this page http://serenesforest.net/fire-emblem-fates/nohrian-classes/class-skills/ and it says like this
"*2 Battle Skills: Skills with an activation rate that can occur any time during battle, eg. Astra, Luna, Sol, Miracle, Pavise, Aegis."
My point here is that is it possible to get a stack of same skill through Nohr skill such as having two chance for activating, lets say, Astra skill. If the first chance from lead unit is not activated, will it go through the second chance from support unit?