This is the flow of events in my mind. In my opinion, there's no way Max could've gotten from Achi's room to the stairwell after hearing Iris' roar but before she lunged and jumped on Velvet. The same goes for Suzy. By the time Miyuki left, iris was already half-way through her lunge, and taking into account Miyuki didn't run, but rather just walked, there's likewise no real way that Suzy and Glasses-Gorgon could get to Velvet and iris before the latter had already leapt onto and started beaing velvet up.
Not defensive, just pointing out that Max went from “doorway of 107 and 1st floor hallway” to “1st floor hallway” (which, at the time of posting had been assumed to be on the same floor).
(For my own brain)
URC Locations
Building 1
Ground Floor Reception - G
Ground Floor Hallway? - G
Restaurant - G
Bar - G
Rooms X01-X06 - Floors 1-5
Floor X Hallway - Floors 1-5
Stairwell
Building 2
Clinic - G
Tranquility Rooms G
Ground Floor Hallway - G
Restaurant - G
Bar - G
Rooms X01-X06 - Floors 1-5
Floor X Hallway - Floors 1-5
Stairwell
Building 3
Gym - G
Classrooms - G
Restaurant - G
Bar - G
Underground Pool - B1?
Theater - B1?
Cinema - B1?
Sports Arena - B1?
Rooms X01-X06 - Floors 1-5
Floor X Hallway - Floors 1-5
Stairwell
EDIT
While i love everyone’s creativity in headers, @dragonydas providing a unified one for all players might help slightly to avoid future confusions.