Merkuro Contact and Calendar not linked to clock widget?

Hi,

when KDE PIM is installed, I have all the birthdate in the clock widget. But when I install only Merkuro Contact and Calendar nothing is displayed in the numeric clock whereas it’s the same contact list.

How can I solve this issue ?

KDE 6.1.4 Fedora 40

Thanks

from my notes on plasma5… might still apply

#kalendar works but still no integration with clock on taskbar, so installing
sudo apt install --install-recommends kdepim-addons