Rav Moshe was in America, Rav Shlomo Zalman in Israel. Did they ever meet? Where and when? Do we have a photo of both of them together? (I know Rav Shlomo Zalman was asked to speak at Rav Moshe's funeral, but that wasn't my question ...)
Per Artscroll - new Wasserman edition "Reb Moshe" page 172 "While Reb Moshe and Reb Shlomo Zalman never met in person"........
The new Artscroll Reb Moshe book mentions that Reb Shlomo Zalman did not speak at his funeral.