Nice people interview you and make you feel comfortable.
Interview is focused on finding the best fit and getting to know the entire team, not just the hiring manager.
I appreciate that during all my interviews, I wasn't asked canned questions. Interviewing is a two-way assessment and it's much easier to 'get to know' people when the conversation is organic and unscripted.
Hard to say since I haven't been through it for a while now and assume it has changed.
Engage as more than the hiring manager.