Alcott didn't walk into the VIP room, but instead, he chose to sit in front of it, between Tiamat and the Arena, right in her line of vision. He didn't want to be in her close range because that was deadly, but didn't want to be so far away that he couldn't react to anything; a deadly balance had to be achieved.
Tiamat is the combination of all the Chromatic dragons at their peak, all stacked into one, titanic, muscular body. She was what you get when versions of Gamond in every color were combined into one.
So, to Alcott, he had to change his approach quite a bit. Right now, he was facing a dozen dragons at once, all of them had long surpassed their twilight and reached their peak, and were all using one body.
"Say, I wanted to ask you." Alcott looked back at her through the glass, "You're the mother of the void dragons, the metallic queen is the mother of time dragons, and the chromatic queen is the mother of light dragons... so, who is the mother of magic dragons?"