I wonder, does using a delegated calendar also count as activity, or do I now actively have to sign in into that account from time to time? At least some time

I wonder, does using a delegated calendar also count as activity, or do I now actively have to sign in into that account from time to time? At least some time ago there used to be some wonkiness regarding replies to calendar invitations if somebody sent an invitation to my private mail and I would then accept or decline that invitation via my calendar on my regular Google account, which is linked to a google-specific mail address. So ultimately I ended up creating a secondary Google account for my private mail address and then delegated full calendar access from there to my main account, which is also the one signed-in on my phone.