We are so sorry to hear about Chestnut, it is hard to have a Cat Companion for many years and then suddenly they grow older and are gone.
Chestnut is an Angel now with his wings of silver and gold and will be visiting you once in a while to make sure that you are all right.
Chestnut will make a fine Guardian Angel Cat to the younger Awesome Angels, and will find a place in Paradise where you will all be together in love.
One Fine Day