That ICAO rule change signified when Age 60 was politically lost, and I think whether Duane or Prater or whoever was running ALPA, it was done deal at that point.
Duane remained opposed to the rule change even after ICAO announced their adoption of the new age-65 limit. As much as pilots loved to hate Duane, he was truly a pilot advocate. If you asked him what he felt about age-60, his answer was a simple "the members are opposed to increasing the age, and I stand by that." His personal opinion was irrelevant in his mind, because he supported the membership. Ironically, this steadfast refusal to go against the will of his membership was part of the reason that so many people grew to hate him. He personally hated many of the concessionary agreements and didn't feel that they were necessary, but he refused to tell the pilots that they couldn't have the agreements that they voted in favor of. The pilots later blamed him for these very agreements that they voted for, not knowing that he had been opposed to them the entire time.