What’s triggering notes password entering?

hello peeps

I do remember the password. So unlike from many users who forgot their passwords, my question about notes is more generic.

While most of the times Face ID is unlocking the notes, sometimes it asks for the password instead.

It seems like one of the triggers is a long time since the previous use.

However it occasionally asks for a password even if notes were used just few hours ago.

To note, I have two devices, and notes are syncing between them.

Can a wrong entry on iPad (that stays at home) prompt for the password on iPhone which is out in my pocket?

What else can trigger the need to enter password?