Typeface ID of Process Journal (helvetica/grotesk mix)

I have been trying to locate the typeface used in Process Journal http://www.processjournal.com.au/

Here is a pretty good image for ID:

It looks like a blend of helvetica heavy and akzidensk grotesk.



More like Akzidenz Grotesk

Edit: Could it be the Akzidenz-Grotesk-inspired Theinhardt by Optimo, medium or bold?


The "G" does not look like gotham. In fact, its like 90% Akzidenz Grotesk, so I'm starting to think that it's AG with som customizations...

Theinhardt it is! thank you so much, lovely typeface.