in general, in short words, this is mirroring adrenaline between defenders and attackers, that is, 1 defender stands in the gate, he does repair, however, the attacker can get adrenaline atacker without having to enter the circle, the attacker does not drain, but can kill the defender at a distance and then enter the circle for drain (or if he close, he can come in circle and its +drain with killing) and the same but the opposite situation if the attacker was in the gate, and the defender also uses ranged combat