Given google and chromes involvement with AOMedia I think that its pretty natural that anyone focused on image/video codecs in chrome would have some sort of (distant or direct) connection to AOMedia.

If AOMedia was profit driven in any way (like MPEGLA sorta is via patent pools) it'd look worse, but in this case I just think it's the case that the pool of people working on codec support in a particular browser probably isn't that large so the overlap is to be expected.