Mirroring iPhone to MacBook Pros using AirPlay
I have two MBPs, a 2014 that is up to date with Big Sur and a 2021 Max with Monterey and an iPhone 8 up to date. When trying to mirror the phone using Airplay, I can see the 2021 device (and other nearby AirPlay enabled devices) but not the older MacBook. I seem to recall being able to mirror the phone to the older device using AirPlay in the past. Everything I read suggests that I should still be able to do it but it's not working.
Thoughts?
MacBook Pro 15″, macOS 11.6