But League Two high-fliers Rochdale launched a stunning second-half fightback as Craig Dawson netted before Joe Thompson's late double spared their blushes.
"If I'm perfectly honest, I'm over the moon after being 3-0 down," said Hill. "At half-time I was searching and looking for answers.
"But the answers came from the players and the response I got from them in the second half was absolutely outstanding.
"I'm really happy with getting a draw out of this fixture and getting into the hat for the next round."