My experimental co-locate.
Each wAP 60Gx3 AP works on its own frequency with auto beamfroming.
Clients are connected to the first and third, according to compatibility (regardless of the distance, others prefer 64800, others 60480).
All links work perfectly.
For the average wAP60Gx3, no one is connected, but tends to disconnect by itself (warranty option possible).
Maybe someone has their own co-locate experience?