Sacred Fist: air blessing+pummeling charge

[Serph90]

Hi all.
I'm about to play a sacred fist of shelyn, and I'll grab both the air blessing and the pummeling style/charge feats. Thing is I don't know how those 2 things stack together: the major air blessing gives me the ability to add my lvl to damage when I make a charge attack, while pummeling charge allows me to make a flurry of blows as part of the charge. Do I add the extra damage only on the first successful attack, or for all of them?

[avr]

Going by the precedent with pouncing lances, probably just the first attack.