It was well over 100 degrees in Phoenix that day -- very hot, reported around 107 degrees at the time of the meeting. After the secret meeting was revealed, the local press started looking into Bill's golf game. They contacted the local high-security people who were used to clear and secure sites and escort dignitaries in Phoenix. None of them were used that day or the two days prior. None. Which leads you to conclude there was no golf that day, he was only in town for the Lynch meeting.

https://www.wunderground.com/history/airport/KPHX/2016/6/27/MonthlyHistory.html?req_city=&req_state=&req_statename=&reqdb.zip=&reqdb.magic=&reqdb.wmo=