Same powder?

[Fair 'n Square]

Somewhere (I wish I could remember where) I seem to remember reading that AA#5 and Hodgdon HS-6 are actually the same powder. Seems like Hodgdon buys it from Accurate Arms, or vice-versa.
Am I out in left field, or can someone tell me where I might find that information?

 

[Mike Irwin]

Quite a few powders are "cobranded" like this.

Another example is H110 and WW 296, and I believe HP38 and WW 231 are "the same."

However, do NOT use data interchangably.