Switching focus to second monitor

Is there a way to switch focus to a window on another monitor?

aft+h/j/k/l seems restricted to windows/tiles on the same monitor.

I just started using this script and I'm not sure if I missed anything or if it's a bug or a missing feature.

I can't see a reason why this couldn't be implemented. I haven't used KDE for a while, so I'll have to setup a virtual machine to test the changes.