theHello, I am a bit embarrassed that I can't seem to find the answer to this on my own. I have exhausted the google's, apple help, TIL's, and other resources.

In Airport Utility, there is a list on the left that will show your connected Expresses, Extremes, and Capsules. To the left of the icon that represents the device, is a small dot, usually green.

At the in-laws house, I am showing yellow.

Everything it working fine, Internet speeds are normal, backups are happening to the Capsule, and repeating is working with the Express. However, I have a yellow indication on the main base station that is a Time Capsule.

Here is a screen shot I found that I have marked which shows the area I am talking about: