As a Kinetic-Elec defender and using Transferance ( endu drain from target, buff to team ) I never ever saw an AV endu bar moving, never.
Example : few days ago, my SG mate and I in a group of 4 fought Siege twice and I landed all my Transferance, I casted it every 10 sec or so ( hasten 6 slotted and Transferance with 3 recharge reducer ) and it never drained any endurance from Siege or it was so small that I could not see it.
AV seems to have an endless endu pool or an insane endu recovery rate.
