Good explanation of how a Charitable Lead Trust can pay into a Donor Advised Fund. Note, however, how the plan delays the front line charities from getting the money. Say the CLT is set up to be funded at death, in, say, 20 years. Then it pays out a stream of income to the Donor Advised Fund over another 20 years. The Donor Advised Fund in turn pays out, say, 5% of the accumulated funds each year for many years, in a little trickle to the front line organizations. The human race will be extinct by then, but at least the money managers will do well until the Trump of Doom. A better piece of advice is to start by considering what you want to change or preserve in the world. Then figure out what timing of funds to the front line orgs will produce the real world social change you want. My guess is that more money sooner will have a bigger real world effect. As Tracy Gary says, "early money is like yeast."
Taking advice from financial people or legal people about philanthropy all too often produces this kind of dysfunctional advice, to push money through any number of charitable tools, generating fees and commissions in the process. Advisors generally have no interest and little expertise in leveraging social change any time soon. To get real in your giving, I would suggest starting with the ends in view and communicating your vision in writing to your advisors.
If your goal is to change the world ASAP, before the problems get out of hand, give now, and give direct. If a CLT makes sense, consider just paying the stream of income direct to the front line charity of your choice.