LTC annuities don't qualify for partnership programs and are very expensive for the benefits you get. They are not comparable replacements for LTC insurance and in my personal opinion, should only be used for people who can't qualify for LTC insurance and can only get one of these with the relaxed underwriting.
Lincoln National has a product that combines universal life insurance and LTC benefits called MoneyGuard. When I break down the numbers, I usually find it's cheaper to buy a single-pay universal life policy and a single-pay LTC policy than combining the two into one product and watering down the LTC benefits.
Run the numbers and compare with an LTC insurance policy and I think you will agree with me. Any time you combine two or more types of insurance into a single product, you are probably going to be worse off than getting both products separately.
Disclaimer - I am an independent insurance agent. If the above message contains insurance-related content, it is NOT intended as advice, and may not be accurate, applicable or sufficient depending on specific circumstances. Don't rely on it for any purpose. I do encourage you to consult an independent agent for insurance-related advice if you have a question that is specific in nature.