Sort of. I did find this article when searching for evidence of whether the AGU ever assists in LEA, but I'm mostly interested in the topic because I've been working on-and-off with Daniel Lemire and 'BeeOnRope' on a research paper that involves getting intimately familiar with the innards of the AGU's on recent Intel. I have no doubt that the AGU exists!
Related, you might be interested in this StackOverflow, where among other things, Peter Cordes (is he here?) and BeeOnRope conclude that the Port 7 AGU cannot be acting as assist to the 3-cycle "complex" LEA: https://stackoverflow.com/questions/50557636/what-type-of-ad... (expand the comments on the answer).