Almost. Coprimality can never be guaranteed. If the numbers are p and q, with p prime and q being adjustable, just take q=p. Then they match up, showing that th

Almost. Coprimality can never be guaranteed. If the numbers are p and q, with p prime and q being adjustable, just take q=p. Then they match up, showing that this barrier isn't enough. The other relevant barrier we have is probably that a 6-year wasp has difficulty stretching its cycle by a factor of 3--much more difficult than a single year or two.