Ferdinand refused to acknowledge Terry and Ashley Cole as expected during the pre-match handshake at Loftus Road.
It was not known how many of his Rangers team-mates would follow suit but it was still a surprise to see skipper Park do the same, something the midfielder repeated during the coin toss.
Park spent seven years playing alongside Ferdinand's brother, Rio, at Manchester United and it is possible his decision was taken out of some sort of loyalty to his former team-mate.
Hughes said: "They had the discussion and I was made aware that some were prepared to shake the opposition's hand and some weren't.
"I didn't know which individuals and I wasn't going to push the point.
"It was a personal decision for each and every one of them."