Yep, you’re right. Since it was their witness, I made the jump in logic that they were questioning him. It clearly states he was under cross-examination.
Thanks for the correction. Sorry folks...
He was asked the question in a roundabout way. Paraphrased:
Serino: “He was either being truthful or he’s a pathological liar.”
MoM: “Was Zimmerman a ‘pathological liar?’”
“No.”