South Sydney extended their NRL winning streak to six matches and retained second spot on the ladder with a 22-18 win over the Gold Coast Titans at Skilled Park on Sunday.

The Titans made things interesting with tries to five-eighth Aidan Sezer (72nd minute) and Kevin Gordon (78th) but left their run too late as Souths produced their best streak since 1994.

Gold Coast's loss completed a Queensland shut-out in round 22 after Manly edged North Queensland 8-6 in Townsville on Saturday night and the Raiders beat Brisbane 28-12 in Canberra on Sunday.

Video referee Sean Hampstead again found himself the centre of controversy after two crucial first-half calls both went the Rabbitohs' way.

Hampstead disallowed a try to Titans winger David Mead in the 33rd minute, ruling utility Luke O'Dwyer, who delivered the final pass, had impeded Souths forward Chris McQueen.

Before the jeers had settled, Hampstead was again off-side with the home crowd, this time for flashing the green light to a try to Rabbitohs winger Justin Hunt after numerous looks at the video.

Regardless, South Sydney deserved their win with some exciting second-half attack.

The only concern for Souths coach Michael Maguire surrounded a second-minute tackle by English international Sam Burgess which left Titans fullback William Zillman on the turf dazed.

Fortunately, Maguire has Kiwi strong man Roy Asotasi ready to return from injury if Burgess is given a holiday by the judiciary.

While the win consolidated Souths' spot in second place, the Titans will drop out of the eight if the Wests Tigers beat Parramatta on Monday night.

South Sydney Rabbitohs 22 (J Hunt 2 A Everingham D Farrell tries A Reynolds 3 goals) Gold Coast Titans 18 (K Gordon S Michaels A Sezer tries S Prince 3 goals) at Skilled Park. Referee: Ben Cummins, Phil Haines. Crowd: 20,187

- AAP