What happens with you add clan in two families?

I would like to know what happens if I add a clan in two different families, as the guy who takes care of the pulls asked me to be more attentive, I will ask here first.

There is a family that would like to join mine, but they use the tool to manage their clan.
However, I need their clans to be in my family too so that I can manage the general rankings of all clans involved in internal competitions.

I noticed once that the key to the clan may be the only problem. Tell me whether or not I can add these clans to two families?

You can’t have a clan belong to two families. If you do this right now, the site will give a silent error and place the clan inside the first family that it’s associated with.