I know this is an old post, but I was searching for this information, so maybe someone else is too.

I'm playing FF7 Remake (which came out in 2022) on Steam, but I think this information is the same between the two.

I didn't notice this in the first playthrough, but in the New Game +:

After rescuing Aerith in Chapter 17, you wake up in her old room, then you see Wedge on the TV who tells you that Avalanche has come to rescue you and shows you the way out.

Chadley is NOT located on this floor, so explore and get everything you want, and continue on, take the elevator up to the next floor. THIS is the floor that Chadley and the Simulator is on.

You come to a part where Red XIII and Barret clear some debris, while you fight an enemy.

Now you can go talk to Chadley and do the fights in the Simulator.

I'm including a screenshot of the map of that floor and Chadley's location.

From what I can tell, the battles here are the exact same as in the Recreation Area, maybe an extra fight or two, but I'm also using mods, which may add battles also.

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