"He seems fine but it was an 18-hour day for him from the time he left the stable and came home again after a tough run.
"I will go back to England when I'm needed.
"It has been the most amazing experience. There is just nothing like it."
Waller said drawing barrier 15 was a disadvantage because Brazen Beau was on his own on the grandstand side but he had no criticism of Craig Williams' tactics.
"We wouldn't do anything differently," Waller said. "Craig walked the track and that was where the best ground was.
"It's a shame something else didn't go with us and the American horse just got to us. It was still a great effort and Brazen Beau did us proud."
Although Frankie Dettori rode Undrafted to beat Brazen Beau, Waller said seeing world-renowned jockeys such as him added to the experience.
"The whole five days had everything," he said.
"Ryan Moore was the leading rider, Frankie is back to his best and Graham Lee who won a Grand National came out and won the Gold Cup.
"And Newmarket is amazing. It's all about the horses and the facilities are like nothing else."
Brazen Beau is stabled at the Dubai ruler's Godolphin yard and will return to Australia to stand at Sheikh Mohammed's Northwood Park in Victoria in the spring.
- AAP
