@Inaventu- You were fortunate enough to only testify at a civil trial. I got called as a witness in a criminal trial years ago. I got a call from a criminal attorney representing a man charged with murder. He turned out to be a former neighbor of mine, and I had a pretty good relationship with him. The defense wanted to refute some prosecution witnesses who said he was always a violent person and had choked his wife several times during the time he was my neighbor.
I was carefully coached by the defense attorney about how to react on the witness stand. I honestly couldn't recall any incidents of violence from that time, and I met his wife several times. She didn't appear to be a victim of domestic violence. I was strongly urged to stick to that story and not let the prosecutor badger me into telling stories about other incidents of bad behavior. There was something about sitting in the witness stand that put the fear of God into me, though.
I was told not to elaborate, but I felt like I needed to answer the prosecutor's questions thoroughly. No, I wasn't around the defendant 24 hours a day and I didn't ask his wife any questions about their true relationship. I was just a friendly neighbor and I thought he was a decent person at the time.