And this is what I see with my Google default search after I enter a search topic:
AI Mode All Images News Shopping Videos Web More Tools
'All' IS the default mode if you don't activate AI Mode
Apparently it depends on the topic. I entered Spartacus and AI Overview appeared WITH the usual FULL page of choices....Wikipedia, Netflix, BBC........directly underneath the Overview.
I entered 'did Spartacus ride a chariot in the movie Spartacus?
''No, the 1960 movie Spartacus intentionally avoids the use of chariot races.
The film, directed by Stanley Kubrick, steers clear of many common "sword and sandals" genre clichés, including the elaborate chariot races that were a major spectacle in films like Ben-Hur, which was released the year before."
So, your search resulted in an hallucination? Ignore the Overview and scroll down the page.