Is there a possiblity to display or group tickets in one place from 2 different groups?

Context

As I understand, the hierarchy of GitLab tickets is: Group → Project → Various tasks

Problem to solve

The problem is that I have recently faced a legacy issue of having tickets related to 1 team being separated into two different groups. I want to assemble a list or more prefferably a Kanban board in GitLab to have tickets from 2 different groups of projects displayed in one place.

Alternative solutions

If the desire mentioned above cannot be fullfilled, is there a way to bulk copy all of the tickets missing from one group to another and have all the data displayed in one Kanban board?

Versions

I am using GitLab Enterprise Edition v16.9.3-ee