How to make 2 characters hand in hand when they move together?

right now already made one of them as the “follower”, who is always moving to the position of the other’s, so they can keep moving together, like Mom and kid wandering in park.
but what I wanted is they can hand in hand, how should I do to achieve that? bond their hands ?

Easiest solution I can think of is to make one a child of the other, and position so the hands overlap.