@Gil6 - Yes. Search can be within a topic or can kicks in as part of fallback if automation topics don't prevail. In order to surface specific docs based on a user's query, boost rules in AI Search are very helpful.
If you're new to the Virtual Agent, I find that it helps to visualize the conversation structure and think of your automation topics v your searchable content. You'll have fewer automation topics, so find those with keywords on NLU - if no automation topics are found, search the content (KB, catalog, community etc)
For some topics, like PW Reset, you might want to have a search within the automation topic to answer questions prior performing any task - this is how you can combine search and automation. In the delivered ITSM Virtual Agent conversations content pack, the "VPN Connectivity" is a good example of search prior to creating a ticket.
Fallback can be a bit confusing in the OOTB solution. I delivered a presentation in the VA Academy on June 27 that highlights how fallback should work - that might help illustrate how search in the VA works. https://youtu.be/E1gc3JoUr6A
Hope that helps!
Tricia
