is there a trick to getting universal control working on a 2011 mac mini (5,1)?

i just recently installed OLCP ventura on a mac mini 5,1, and i can't for the life of me get universal control to work. i have a macbook pro and a macbook air that it works flawlessly on (i can use either one and easily push the keyboard and mouse through the edge of the screen to the other), but trying to get either of them to control the mini just won't work.

everything i've found in the documentation says this should just work out of the box on this hardware, but for me it's just not working. at all. am i doing something wrong, or is there a trick to get this working?

submitted by /u/matty8199
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