No fault of the ref, Down to the time keepers at end of the day. Plus the BBC clock is more than likely behind the official time.

The rule book doesnt appear to say if the ref can overrule the timekeepers. It mentions timekeepers but doesnt say who has priority.
SECTION 7
TIMEKEEPING

[iNotes
3 Using Timekeeper[/i
[iA timekeeper may be employed to signal half time and full time, in which case the referee on receiving the timekeeper's signal, terminates the half in the manner described above.

A timekeeper may also assist the Referee in determining the end of a player's temporary suspension.[/i

To be fair to Bentham, (who I generally think is an appalling ref) if he hears the hooter after he has called time off he has to assume that the hooter has been sounding since before he called time off and he hadnt heard it.

IMO the timekeepers fecked up.
Either time expired before Bentham called time off, and for some reason they took a good 10 seconds to sound the hooter.

Or the timekeepers didnt see Bentham call time off or ignored him and allowed time to continue. Which is in direct contravention to the rules.

SECTION 7
TIMEKEEPING (Continued)
4. Extra time
Extra time shall be added to each half to compensate for time wasted or lost from any cause. The Referee shall be the sole judge of extra time except where these duties have been delegated to a timekeeper.

[iNotes
4. Signal extra time[/i
[iIf a timekeeper is employed, the referee shall signal that extra time is being allowed by raising both arms whereupon the timekeeper stops his watch and starts it again when the Referee waves one arm above his head to signal play is about to recommence.[/i

was an air horn used, or was a pre recorded sound played through the speakers?

did the first air horn fail? 5 seconds to connect another is fairly quick.
did the sound guys have the speakers turn on? did they have the button live? did everything work ok? did something need plugging in for it worked?, again 5 seconds isn't long to fix one of the above

aka
with out having access to the official timekeepers clock, and knowing when it was stop/what time was on the clock when the ref stick his hand up, or what happened inbetween the refs signal and the horn sounding. its impossible to call, yet according to most here the ref and/or timekeepers have cocked up.

despite the fact that one of the timekeepers will have been from warrington, so very much doubt he'll have let the other do the horn early.

The fact is the hooter did not sound at the correct time, so there must have been a cock-up somewhere along the line. Whether its the equipment or the timekeepers being wrong it was a mistake by someone or something. It would be nice if an explanation would be provided by Mr Cummins though.

Francis says Relax.