Robins was overseas and missed the reunion, but a beaming Watts was at the Howick St John Ambulance station when Hegley arrived bearing boxes of chocolates and sincere thanks.
"I'm just so thrilled to see [Watts]. We'd loved to have had a $100 bonus bond for each of them," Hegley said.
Hegley's wife of 57 years, Alison, called 111 after her husband began struggling to breathe. Help arrived seven minutes later.
"I was so grateful they were there. I knew everything was going to be all right," the 79-year-old said.
The former nurse met her husband when he was a heart operation patient at Greenlane Hospital, where she was working, in 1956.
Hegley was born in 1931 with a hole in his heart, and with no operation available at that time his parents were told by a paediatric specialist when he was 5 that they should take their son home to Whangarei to die.
As well as various heart operations as an adult, Hegley also had a heart attack two years ago. But he did not go into cardiac arrest as he did in July.
Hegley wasn't Watts' first patient to flatline and he won't be the last.
The joy of saving someone's life never changed.
"It's the most wonderful part of the job. It's what we train for but don't do a lot. The feeling never changes. It's amazing."