Battlerager
fighters gain temporary hit points from hitting with melee and close attacks, "plus any temporary hit points normally granted by the power" (exact words used in the compendium).
The Invigorating
keyword is defined such that when a character trained in endurance hits with an invigorating power, they gain temporary hit points.
So, are the temporary hit points granted by the combination of the invigorating keyword on the power, and the character being skilled in Endurance
"temporary hit points normally granted by the power"?