Forum:Upper limit of Bowers' notation - has it been confirmed?

A few months ago, "Hyp cos" claimed the strength of Bowers' notation was an incredibly large ordinal - much larger than the TFB, for instance. There was no consensus on this, yet it was added to many of the articles on Bowers' numbers. But as the late Carl Sagan once said, "extraordinary claims require extraordinary evidence." Has anyone else been able to confirm or refute this claim? --Ixfd64 (talk) 21:23, January 5, 2014 (UTC)