This does not necessarily mean that the next gen has an account with you - just that you have been introduced to your clients’ next gen.
Transitioning existing assets to your clients' next generation is extremely important. This question seeks to determine how "sticky" those assets are beyond your existing clients. To determine the answer to this question, consider what percentage of your clients have introduced you to their children/beneficiaries, as well as whether you are working to build a lasting relationship with these individuals.