Middlesbrough’s Michael Carrick faced a challenging evening, with Chelsea’s dominant performance leading to a 5-1 aggregate win.
In other games, Manchester City have yet to win any of their last four league matches.
Arsenal made late attempts to probably steal a comeback win, but Chelsea were able to absorb the late pressure.
It was the Blues’ highest-scoring match of the campaign.
Nunes became Wolves’ record signing when he joined from Sporting Lisbon for an initial £38 million last summer.
Both teams forced each other’s goalkeepers into a couple of saves in the game’s opening minutes.
