Calderon has infuriated United with his public pursuit of Cristiano Ronaldo and Gill said of the encounter: "I just said hello.
"There was no need to say hands off, because there are no hands on.
"I just said hello. I know him from various Uefa meetings."
When asked if Ronaldo's name was mentioned, Gill told Sky Sports: "No. Before the match I wasn't thinking about these sorts of things.
"You don't have long meaningful conversations before that match. It's just good luck and thank you very much. Simple as that."