Postpublished at 95 mins
Bristol 36-38 Harlequins
Five and a bit minutes still to play...
Bristol's five tries to Harlequins' six.
A penalty or a drop-goal is what the Bears need to get to Twickenham.
Exeter beat Sale 40-30 to reach sixth Premiership final in a row
Cowan-Dickie, O'Flaherty, Nowell (2) & Cuthbert tries for Exeter
Van Rensburg (2) & Dan du Preez for Sale
Harlequins beat Bristol 43-36 after extra time to reach Premiership final
Bristol had been 28-0 up in first half
Four second-half tries for Quins made it 31-31 at full-time
Final at Twickenham on 26 June
Josef Rindl
Bristol 36-38 Harlequins
Five and a bit minutes still to play...
Bristol's five tries to Harlequins' six.
A penalty or a drop-goal is what the Bears need to get to Twickenham.
Max Malins, missed con Callum Sheedy
Well, well, we're not done yet!
Max Malins crosses for his third try of the game to bring Bristol right back in it.
Callum Sheedy goes for the drop-goal conversion attempt but hits the right post!
Bristol 31-38 Harlequins
Jack Kenningham returns in the back line for Quins after his HIA and Martin Landajo replaces Danny Care at scrum-half.
Bristol now going for it in spades as they need a try and a penalty at least to win this remember...
Bristol 31-38 Harlequins
Penalty to Bristol on the edge of their 22 as Joe Marler fails to release.
Callum Sheedy with a chance to launch the ball upfield.
Bristol 31-38 Harlequins
Away we go again through the boot of Marcus Smith the Harlequins fly-half....
Well, will we need that still in this first semi-final?
There's at least 10 more minutes still to play in this match at Ashton Gate, which I think started earlier today....
Bristol 31-38 Harlequins
Brent Pilnick
BBC Sport at Sandy Park
Here at Sandy Park I've just been handed a copy of the rules for any kicking competition that might happen should either semi-final end level both in terms of scores and tries scored after extra time.
Essentially, three kickers per side, six positions to kick from and two kicks per player.
If it's still even, sudden death from the 40m line in a central position.
Bristol 31-38 Harlequins
Remember - Bristol were 28-0 ahead after 28 minutes....
Tyrone Green, con Marcus Smith
QUINS AHEAD FOR THE FIRST TIME AFTER 96 MINUTES OF RUGBY!
Tyrone Green with another try and their SIXTH of the match after the relentless pressure from that scrum finally paid off.
Marcus Smith with the conversion.
Bristol need at least eight points from somewhere or they won't be at Twickenham next week.
Bristol 31-31 Harlequins
We've already played four additional minutes at the end of this first period!
Another penalty goes to Quins after the shove on that scrum....
Bristol 31-31 Harlequins
Spilled in contact by Quins as they tried to move it out wide to the right, but we come back for the earlier advantage after Joe Marchant and then Danny Care almost went over for their sixth try.
Decision time here for Quins about what they do with the penalty.
Bristol 31-31 Harlequins
Quins inches away from another try and they have an advantage too...
Bristol 31-31 Harlequins
Sara Orchard
BBC Sport rugby union commentator
If the scores remain equal after this period of extra time then the winner will be the team which has scored the most tries in the game (including extra time). Bristol have 4, Quins 5
Bristol 31-31 Harlequins
Clock in the red at the end of this first period as the scrum has to reset...
Bristol 31-31 Harlequins
Finally play does stop for a knock-on and Jack Kenningham can get some much-needed treatment.
Meanwhile players get the chance to try and alleviate the cramp and stiff legs before we get restarted.
Bristol 31-31 Harlequins
Oh my word - it's a sevens match all of a sudden as the ball keeps on being recycled in open play and nobody wants to stop for the scrum penalty.
Incredible work-rate this from both sides.
Bristol 31-31 Harlequins
Bristol line-out on halfway as they try and launch another attack...
It's all out in the open again though as possession changes hands a couple of times amind what looks like a nasty head injury for Jack Kenningham the Quins flanker.
Bristol 31-31 Harlequins
How are your pulse rates Bristol and Quins fans?
Mine's through the roof and I don't even have a dog in this fight as the saying goes....
Bristol 31-31 Harlequins
But it's missed for Bristol!
Callum Sheedy finds the post from his long-range effort as it comes back into the hands of Marcus Smith.
Danny Care kicks his clearance though out of touch.
Bristol 31-31 Harlequins
The first separating factor if we're all square after extra time is numbers of tries scored.
Quins currently ahead by five tries to four on that count, but Callum Sheedy has a shot at goal to get them back ahead.