Board Thread:Theories and Speculation/@comment-35685868-20180605140514/@comment-33286580-20180611135602

No.

Hiruzen never learned FTG, just like he never learned Edo Tensei, Rasengan, CHidori or many other jutsu in existence in Konoha.

the statement seems more like a hype up for the man.

The Professor alias would have been more specific to his ability to understand and break down all forms of jutsu and how they work, an ability he showcased in the war.