How Do You Evaluate a Cultural Fit?

How do you ascertain in a practically i get the cultural fit? Like you go out with the people. We weren't able to do this in our first two deals. One of things tha doctor bell was really interviewing members of the team, like, pretty pretty deeply. You can find a lot of back channel stuff. I'm what do we know they're customers? What do we think of them? What's the market reputation?