Cloned (i.e. initially set up with identical seeds) yubikeys definitely work without any communication about a counter value between them; my personal setup i

Cloned (i.e. initially set up with identical seeds) yubikeys definitely work without any communication about a counter value between them; my personal setup involves two keys so that I wouldn't lose access if I lose a key. There are some obvious drawbacks of that, of course, but it is an option that works, so either that description does not apply to such devices or it is misunderstood.