Does Sidecar recognize the iPad Pro Magic Keyboard Trackpad in Big Sur?

Sorry to re-open this thread, but I’ve been having a lot of difficulty getting Sidecar activated on my iPad Pro 11 (iPadOS 15) and MBP 13" (Monterey’s latest beta). I do use this a lot since both are small screens. Is this just me or others as well? I did make a bootable USB for Big Sur before jumping into the Monterey beta.