The bulk update request #11683 is pending approval.
create implication cowbell (7568) -> bell (43233)
create implication cowbell_collar (217) -> bell_collar (20809)
create implication cowbell_collar (217) -> cowbell (7568)
Reason: Relatively self-explanatory BUR. A cowbell is a type of bell, and therefore a cowbell collar is a type of bell collar.
jingle_bell_collar already has these equivalent implications, so cowbell_collar should too.