If I'm remembering correctly that chapter also contained Jamie yelling at Cersi's Kingsguard for being Shit and Trying to mentor Loras Tyrell. Those parts could have been adapted effectively.
Either way it's irrelevant. Show Jamie is completely removed from book Jamie at this point.
Also in hindsightIt would have been much better if Jamie was the Kingsguard knight that had an affair with Arianne Martell (sorry about the spelling) and have her act as the sir Illian who teaches him how to fight. There would have been something bittersweet about Jamie falling in love with the woman he was origionally supposed to marry. Only to have it all torn apart by war/sand snake BS. That would be very GoT
Also I'm convinced that the current kings landing arc is going to end with Cersi and Margery having a trial by combat to settle the score of who is telling the faith the truth. With Robert Strong fighting for Cersi and Loras fighting for Margery. It's a great way to get Loras out of the picture without boiling him in oil like the books
That's much better.
And the Hound bursting in at the last minute....