CWL question: if you are in a league where only 1 clan gets promoted, what happens if the top 2 clans have the same exact number if stars and destruction?
Also, if 2 clans get demoted, what happens if the 3 bottom clans have the same number of stars and destruction?

I realize the odds of this happening are roughly the same as a snowball's chance in hell to survive more than the span of a heartbeat, but I am curious to know.
Would both be promoted or all 3 demoted? If not, how does the system "choose" whom to promote/demote?
I did a google search and couldn't find or didn't see anything relating to such a specific scenario.
Thanks!