Communication with partner

I was working a 3-person game this afternoon. I was the trail, tableside. Player A1 drives from the my area into the lead's area. A1 gets underneath the basket, and begins to pass the ball to A2, who is in the center's area. A1 gets hacked on the arm during the pass. Lead correctly calls the foul, but signals two shots. I walk past him before he reports and ask "hey did you know he was passing"? My partner ignores me and confronts me after the game about it. He says that I should not "question" his foul call, and says that even though I was trying to give him information that would have made the foul non-shooting, I should have kept that information to myself. Thoughts?