Merge two calendars together

I have an icalendar thing set up and showing the next 5 items nicely as a widget, I reuse this widget to show another calendar widget for our household chores. What I would like to do is merge the two so it shows the next 5 items from either calendar - has anyone done something similar to this?

Probably. You provide no details about the Items involved nor the widget so :person_shrugging: .