It was not something Astaroth enjoyed doing, negotiating, so he let Phoenix handle it. In the meantime, he made sure to keep the players in his party in the loop, in case anything had to go down suddenly.
He also sent a message to RedWing, who was back in Bastion City. In that one, he entered their current coordinates, as well as the location of the one-way portal in the palace.
He knew he could trust him, and so he chose to give him access to it, saying he should only use it in case of an emergency.
RedWing replied with many thanks and promised to use it as sparingly as possible, which was as much as he was willing to promise already. Although Astaroth had a feeling that he would use this portal for situations other than emergencies, he could tolerate a bit of leeway.