Its a pity that no referee has replied to this, but there is NO time added on at all.
The extra time comes from the official match watch being stopped. They wear 2 normally, one runs without stopping, the other is stopped, that's how they get the extra time.
Before we equalised there had been 4 second half goals {edit sorry 3 before we scored}, each probably 1/2 to 1 minute celebrations, and 2 subs as well. The referee should stop his official watch for each of these.
He will have indicated the extra time to the 4th official before we scored (4 minutes seems reasonable to me for 3 goals and the odd minor stoppage).
We then scored right on 90 minutes (and took about a minute before they kicked off again), plus there was a sub as well.
We need to forget this extra time, and look at the crap defending that cost us a point, for the whole of the second half we just kept hoofing the ball clear to nobody, and it kept coming straight back, we defended way to deep, and it we gave them 2 free headers !
We lost today because the team as a whole defended poorly, not because of the referee, had it not been for Given, we'd have lost long before the 96th minute. I know we're all gutted about how it ended, but FFS the real reason was crap defending, especially on set peices and crosses, all 4 of their goals came from one or the other.