This person is a nineteen year old sitting in a stool eating a sandwich she watched Max walk in and has a quizzical expression.

"Did you just walked pass two people while you walked in?" Temps says "I don't think the door can open to two different worlds at same time, not like that at least, not normally."

A napkin appears

The door is working normally, he just managed to walk in while the other two are leaving.

"Well, that explains it," Temps says after reading the napkin "Hello, have you been here before?"