What is going on with this WAP setup in this lecture hall?

The setup in question: https://imgur.com/a/Zj6bEtQ

I took this photo in my lecture hall. As you can see there are two Aruba access points on either side of the projector. This lecture hall is only about 200 seats. I am trying to figure out what is going on here as far their configuration. In addition, I didn't check for hidden SSIDs but, as far as I know there is only one SSID for staff and students.

Given that they are so close to each other don't they interfere with each other? Don't modern APs have 200+ client capability? So is this a client limit issue? Are they maybe setup on different channels to minimize congestion? If so what stops the clients from just connecting to the one? Are they setup to only take 100 clients each or something and that forces clients to connect to the other AP? Are they maybe setup to only do one band? If so what's the advantage to that? Are there any other possible explanations for what is going on here?

TL;DR - What is the most likely configuration for these two APs sitting next to each other?

Thanks.